Carat is a reference measure for precious stones and metals. How to convert gold carats to grams What does 1 carat mean

Precious minerals, thanks to their splendor and shining brilliance, have always attracted the eyes of people and became an object of admiration. However, such expensive stones are made not only by external beauty, but also by their rarity. The cost of unique specimens reaches sky-high heights.

An equally important parameter for setting the price is the weight of the mineral. To measure the mass of precious stones, a non-standard unit is used - the carat, which is well known to jewelers. However, for an uninformed person, the weight of a carat in grams remains a mystery, so before buying an expensive jewelry encrusted with diamonds or sapphires, you should know how much one carat weighs and how to determine the number of grams in a gem.

To measure the mass of precious stones, a carat is used - a unit that has the designation ct and is equal to 0.2 grams. In England, the same value is used to determine the percentage of gold in the setting, but in this case, the unit is abbreviated "K".

It is important to note that the dimensions of a gem are not measured in ct, as this is a unit of mass, not dimensions. In addition, the parameters of a jewelry insert largely depend on the method of cutting, with the help of which the crystals take shape.

To determine the value and value of a mineral, one should know how many ct is contained in a particular sample. When buying, do not forget that cleanliness also affects the price, so more does not always mean better.

The history of the appearance of the unit

The history of the origin of the carat as a unit of measurement is rooted in ancient times. In the old days, scales did not exist, so merchants and jewelry dealers had difficulties selling jewelry by original weight. A unified measurement system was invented, which compares the size and mass of minerals.

To determine the weight of gems, carato seeds began to be used - ceratonia plants, which grew in the area where the minerals were mined. In other countries, acacia grains were used as a weight. However, the name "carat" owes its appearance to ceratonia. The fact is that the fruits of this tree had the same weight - 0.19 grams - regardless of the place of growth and time.

The measurement was formally agreed upon in 1907 during the fourth general conference.

In the USSR, official approval was received in 1922. From that moment on, the mass of jewelry began to be defined in ct.

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V modern world There are two types of units for measuring the mass of jewelry - metric and assay carat. The first is a measure of the weight of the precious stones, the second determines the purity of the gold alloy.

Metric

Metric carat is a unit of measure adopted in all developed countries. It is the metric ct that measures the mass of unique and dazzling diamonds. The history of the origin of the unit of measurement goes back to antiquity, where the mass of minerals was determined using the fruits of ceratonia, having an identical weight - 189 mg.

Difficulties began when traders found out that in different countries the fruits are different. This created inconvenience and caused conflicts between merchants. As a result, the idea of ​​adopting a single unit of mass appeared, but Great Britain opposed this, which adhered to its own metric system. Despite the difficulties, the jewelers soon agreed on a single ct - 0.2 grams.

Assay

This type differs from the metric carat and does not denote a measure of weight, but the purity of a gold alloy. Assay carat invented in Ancient rome when the emperor introduced a gold coin that weighed 24 K. A similar coin is still in active circulation in the UK to this day. Other countries prefer to use percentages, for example, the 585-carat designation indicates that the jewelry contains 58.5% pure gold.

When using the assay unit of measurement to determine the purity of gold, the following ratio is taken: 24K is the content of pure metal. Therefore, a piece that contains half the gold will have 12K. In Russia, the jewelry industry makes jewelry with fineness 750, 585 and 375 - 18, 14, and 9 K, respectively.

Difference between gold and diamond carats

To answer the question of how diamond carats differ from gold carats, it should be understood that these two definitions are used for different purposes:

• Diamond (metric) carats used to indicate the weight of minerals, which include the famous diamonds. The weight of one carat is 0.2 grams, the designation is ct.
• Gold (assay) determine the amount of pure gold and have the abbreviation K. In some countries, for example, in Russia, jewelry is made with samples that can be easily converted to K.

The system for measuring the weight of gems and gold content dates back to antiquity and is still used today. In the jewelry industry, carat scales with a minimum error are used to determine the weight in grams. To calculate the carat, there are many tables with the help of which even an ignorant person can calculate the number of grams.

How many grams are in one karate

At the beginning of the 20th century, jewelers agreed on the exact number of grams per karate. In 1907, it was decided to equate the weight of one carat to 0.2 grams. However, not all countries agreed to convert the mass to carats, while continuing to use their own values. The unified standard of the country was adopted in the following sequence:

• France - 1907
• Holland - 1911
• USA - 1913
• USSR - 1923

Following these states, other countries also made the decision to convert grams into carats. However, a 1 ct gem is a rare and expensive gem. Crystals with a lower mass, less than 0.2 grams, are much more common. But here, too, jewelers did not use standard measures and created their own unit - point. It is found that one ct (0.2 grams) is equal to 100 points.

How the weight and diameter of precious gems are related

Before visiting a jewelry store, a table of the ratio of the diameter, which is measured in millimeters or centimeters, and the weight of the mineral will help you to find out the approximate cost of a stone. It is difficult to find out exactly the mass of a particular specimen, since the gems on sale have different cuts. At the same time, the primary goal of each jeweler is to preserve the weight of the original crystal, so gems of the same diameter can weigh differently.

To understand the intricacies of the ratio of carat and diameter (mm), the table will help:

Similar tables that exist for each variety of jewelry stones allow you to find out the number of grams without removing the precious insert from the ring or earrings.

How to identify carats in stone

Many lovers of beautiful jewelry and collectors are interested in how to find out the number of ct in a stone. Undoubtedly, this knowledge will not be superfluous - unscrupulous traders are common, and the risk of being deceived is great.

To measure the carat and roughly determine the cost of a shining pebble, you should remember:

• First of all, you need to find out how many grams the mineral weighs.
• The number of ct directly depends on the diameter of the gem: having the exact figure, you can easily calculate the number of grams.

To determine the number of ct, use one of the following methods:

• Microbalance- an instrument with which minerals are weighed. The measurement accuracy is determined up to thousandths.
• According to the formula. This method works well for loose stones. For measurement, the formula is used: m = (d ^ 2) x h x 0.0061, where m is the mass, h is the height, d is the diameter.

The most convenient method for determining the carat is to use a table with the help of which, knowing the diameter, the necessary calculations are easily performed.

Square cut minerals carat table ("asher", "princess"):

Carat is a unit for measuring the weight of precious minerals that has been around for many years. Knowing how many grams a carat weighs, and using special tables, you can confidently go to a jewelry store to shop.

You don't need to be a jeweler with many years of experience to learn how to determine the carat value of a diamond. General knowledge of the measures is enough to know how many carats are in any present that you have acquired, if you suddenly have doubts about the seller's bona fides. And the table of carat diamonds will tell you what a diamond looks like, if its mass is accurately determined in 1 carat, and the size of diamonds of the corresponding weight.

What is a carat and what does it mean in a diamond

Not everyone knows what carats are, although their definition is not so difficult in itself. This is a measure of weight that has a very clear relationship with a unit more familiar to an ordinary person - grams. 1 carat of a diamond, like any other gemstone, will be equal to 0.2 grams, or 200 milligrams. On labels and in documentation, the carat of diamonds is usually indicated by dividing the unit into 1000 parts. So, if you see a value of 2,000, then this is a 2 carat diamond.

Why this particular unit of measurement, why stones are not measured in grams?

The fact is that in the old days, or rather, in the Middle Ages, there was only one way to accurately measure a small precious stone. For this, seeds of the acacia Ceratonia siliqua were used. Therefore, the word "carat" stuck in their attitude. They are unique in that they have almost the same weight - 0.2 grams. However, it fluctuated slightly around this figure, and subsequently in different countries the value of this unit was slightly different. And only in 1907, in Paris, the first international definition of how many grams in karate was 0.2 was approved.

In fact, the mass of minerals in jewelry is measured in grams too. But usually this unit is used for less expensive stones that are not precious. So, about malachite weighing 5 carats, they would rather say that it weighs 1 gram. But a diamond, for example, 3 carats, cannot be described as "0.6 grams" by any self-respecting jeweler. It just so happened with these masters of their craft.

The cost of precious stones depending on the weight

Of course, the more a sample weighs, the more it costs. This is one of the main criteria for evaluating it, along with purity.

If we talk about such a mineral as, then by the number of carats it is divided into 4 groups:

• diamond chips(up to 0.010);
• small(up to 0.029);
• average(from 0.030 to 0.990);
• large(over 1,000).

The price goes up (or down) a lot depending on the group, but, of course, within the same category, the cost of copies can differ significantly. At the same time, the price of each unit of mass in very large diamonds, for example, 9 carats, is much higher than in small ones (less than 0.5 carats). This is how they differ, for example, from gold, where the cost of one gram per kilogram is the same as that of a single gram.

Large diamonds (more than one carat) are one of the safest investments in the world. Such an investment has many advantages - a diamond of, say, 3 carats can be sold quickly, it is easy to store and over time it will not depreciate and will not lose its properties.

This is not the case with smaller or larger diamonds. Small samples are not particularly in demand, as they are often found, but they can also have their own value. In addition, experts predict that it will run out in the next 20-30 years, and this mineral will increase in price.

As for large stones, if you come across an extra large diamond, 10 carats or so, keep in mind: it will be difficult to sell it. After all, it costs a lot, and the demand for such things is not so great. But nevertheless, it can become an excellent "savings book" for the future.

How to determine how much a diamond weighs if the size in mm is known?

In order to find out the carat value of diamonds, you need a table. The weight of a precious crystal of the same diameter may differ depending on the cut. But most often the standard round cut is used, and it is she who, as a rule, is indicated in the tables. It is more convenient to use this method than the balance, in the case when the sample cannot or is difficult to remove from the frame.

The size is determined using a special ruler, which indicates not only millimeters, but also their fractions. Indeed, not every copy is 3 mm wide, more often we are talking about much smaller versions. Therefore, there are rulers where the division price is not equal to one millimeter, but to its tenth fraction.

If you follow the table, you will see that the size of a 1 ct diamond, if it is round cut, is 6.4 mm. An especially large 5 carat sample will have a diameter of 11 mm. But minerals of this size are rather rare. Diamonds in five tenths (5.1 mm) or three tenths (4.3-4.4 mm) ct are a little more common, but they are also rare and rather large. But those that are less than two millimeters in diameter are already classified as small (up to 0.029).

Below you can find a table of the ratio of the diameter and mass of round-cut diamonds:

Square cut minerals carat table ("asher", "princess"):

If you need not only to measure the mass, but also, we recommend that you contact a jeweler. The fact is that the cost is influenced not only by the size and weight, but also by the cut, the quality of the mineral itself, its color and purity. The real price can only be called by a trusted specialist.

Good afternoon to all connoisseurs of jewelry art and everything connected with it. Today we will talk about how much 1 carat of a diamond weighs in grams. You will learn what is the ratio of the mass of the processed stone to its size, as well as how various precious materials were weighed in the old days. You will definitely love stories related to diamonds. Enjoy your reading!

The history of measuring the weight of minerals and precious metals and what is the cost of one carat

Today we are used to measuring various bulk and solids in grams and kilograms. However, several millennia BC, people used completely different units to measure weight. And to determine the weight of a diamond or other gem, an equal-shoulder scale was used.

Weights were placed on these scales, made of ordinary stone or Ivory(from wealthy merchants). For the people of Israel, the Mosaic Law even wrote that merchants were required to have exact weights corresponding to a certain weight. Failure to comply with the Law carried a penalty that could be expressed in an administrative penalty.

The most common units of weight in Israel were the shekel (11.4 grams) and talent (34.2 kilograms). However, when foreign merchants began to import diamonds into the country, it became necessary to introduce a smaller measure to weigh small stones. Then such a unit of measurement as hera appeared.

What was one hera equal to? It corresponded to fifty-seven hundredths of a gram, or about three carats. Of course, not all stones were of this size, but nevertheless Gera made it possible to measure rough diamonds more accurately. The peak of the import of precious materials into the country fell on the period from 1030 to 970 BC, when the people of Israel were ruled by King Solomon, and then by his son. Then the annual income of the tsarist treasury amounted to over fifty billion dollars for the modern monetary equivalent. Even an ordinary inhabitant in everyday life could have precious gems and gold.

In Persia, a darik was used to check the mass, which weighed 5.6 grams. He met the needs of almost all materials. Closer to the first century AD, the Roman Empire began to rise on the world stage. In her money circulation, there was a measure of weight called a denarius, which was 3.85 grams. Interestingly, Greek culture dominated at that time, and the Greek language was spread throughout the empire. However, the monetary measurement of the mass of jewelry was exclusively Roman.

It is worth noting that one carat, as a unit of measurement, already existed during the times of the Greek and Roman empires. However, it was popular only in Asian countries. What is Carat? Carat was the name given to the seeds of a leguminous tree, which were always the same in weight. Since they were always at hand, they were easy to use on the road. The merchants who traded in gems have always had these seeds.

The cost of 1 carat strongly depends on the quality of the stone, its color and size.

What were the carats

Surprisingly, this unit of measurement of the mass of a precious crystal was different in different countries. Sometimes it even measured volume or area. This is what the carat was like in the old days in different countries:

• United Kingdom. In this country, its weight was 205.87 mg.
• Austria. Carat weight 205.3 mg.
• France - 206 mg
• Central Asia - 223 mg.
• Egypt - 195 mg

At first glance, it may seem that the difference is insignificant. However, do not forget that the cost of the mineral is very high, and can reach tens of thousands of dollars per gram.

For example, one gram of a fancy red diamond can cost three hundred thousand dollars or more. Therefore, even the smallest inaccuracies in the metric system could lead to serious material losses on the part of the seller or buyer. That is why in 1907 a unified metric system was introduced, which determines the weight of a carat. According to her, the weight of 1 carat was equal to 0.2 grams. This greatly simplified the process of evaluating precious gems. This metric is used in the jewelry industry to this day.

In the European metric system, the unit for measuring the mass of a mineral is denoted by the symbols ct, and in the Russian kar. The troy ounce is also popular when it comes to precious metals. At one time, the smallest unit for determining weight was the grain, which corresponded to 62 mg, or one third of a carat. For a long time, it has been used in pharmacies and jewelry houses. Over time, they got rid of it and only a troy ounce remained.

Diameter to weight ratio

But is it possible to determine the mass of a stone based only on its diameter? When it comes to round stones, then yes. Due to their shape, it is possible to determine their weight in grams by measuring their diameter. There is a special table that contains all the data regarding the weight of a stone of a specific size. We will provide only some information on this issue. For round stones, there is the following weight estimate:

• One millimeter is five thousandth ct.
• Two millimeters - three hundredths of a ct.
• Three millimeters is one tenth ct.
• Four millimeters - twenty-five hundredth ct.
• Five millimeters - half a car.
• Six millimeters - eight tenths of carats.
• Six and a half millimeters - one ct.

With an increase in the diameter of the girdle, its mass will naturally also grow. Although the weight depends on the diameter, but with different cut it will be different for the same type of gemstone. So, when cutting "princess" or "oval", the consumption of waste material will be less than with round cutting, so they are more profitable from a material point of view. Also, less effort is expended on the jeweler.

Calculation of the mass of a gem relative to the cut

• Round diamond... The mass of the sample in this case will be equal to the girdle diameter squared multiplied by the crystal height and multiplied by a factor of 0.0061. Why isn't it calculated using the usual ball formula? The fact is that the stone does not have an ideal rounded shape, but fifty-seven faces, which is why we multiply by a coefficient. For stones with one hundred and two faces, the coefficient will be slightly different.
• Diamond "Princess"... Here, the weight of the sample can be found by the following formula: the height of the pebble multiplied by the width and length, and multiplied by a factor of 0.0083. As you can see, this cut saves more material, so this cut is more profitable.
• Oval cut... Here the calculation is similar as in the case of round faceting. The height of the mineral must be multiplied by the diameter squared and by a factor of 0.0062. Not to say that very economical cutting, but still more material is retained than with a round cut.

So 1 carat is roughly equal to 200 mg.

The largest diamonds in history

The size of a stone is valued as highly as its weight. We present to you, our readers, a list of the largest stones that amaze not only with their magnificence, but also with their impressive size:

1. Cullinan-I was one of those jewels that came from the cutting of a piece of the same name. Each part of it was numbered. The weight of the first Cullinan was 3.1 thousand carats. Its feature was the absence of bubbles and cracks. After crushing the diamond into pieces by the Asscor brothers, 105 stones of various sizes were obtained, the largest one had a weight of 530.2 carats. He became known as the "Star of Africa".

2. Product yellow color The 110.3-carat pear-cut "Sun Drop" was formed about 3 billion years ago, but was found in South Africa in 2010. The amazing color is due to the nitrogen atoms, which are the constituent of the product's mesh.
3. The uniqueness of Card Noir lies not only in the fact that it has 88 carats, but also in its black color. The insurance price of the stone is $ 37 million.

We are sure that this article was very interesting for you, and you were able to deepen your knowledge of the scale of precious stones. Now you can independently calculate the weight of a gem, taking into account its size and cut. Do you think this information will be useful for your friends as well? Then share this article in social networks and let your friends know the answers to these questions too.

Team LubiStones

Girls' best friends are diamonds. Not only ladies know this, but also many men who gave their beloved jewelry with this coveted stone. Questions regarding this precious crystal are of interest not only to the owners of it, but also to those who are just going to acquire a cute trifle decorated with a sparkling diamond. Curious how much a diamond is worth? This, perhaps, worries men who have decided to please their sweetheart. How many carats are there in a diamond? Well, this question worries many happy owners of a sparkling stone.

What is a diamond?

It's no secret that the most expensive mineral is diamond. This crystal not only has amazing aesthetic qualities, but is also the hardest substance on the planet. And it is the latter quality that is widely used in science and technology. A diamond that has been given a certain shape and cut is called a diamond.

How many grams are carat?

Before answering this question, let's turn to history and remember where the measure of carat came from. Measuring the weight of precious stones in carats began in the fifteenth and sixteenth centuries in Mediterranean countries. The fact is that precious minerals are small and weigh very little. At that time, accurate measuring instruments were rare. So, back in those days it was found that the seeds of the carob tree (Ceratonia siliqua) have an unusually constant weight - 0.19 grams. Therefore, the weight of the precious stones was compared with the weight of these seeds. And then the final answer to the question was already given: "How much is one carat?" This is a value equal to the weight of one grain of the miracle tree. And although now this method is not used, but the term consonant has remained. Remained and the weight of a carat - 0.2 grams. This is how the answer to the first question was obtained - how many grams are in karate.

How to find out the weight of a diamond without using a scale?

Perhaps not all diamond jewelry wearers know the weight of their stone. And if you really want to know? What to do? Not picking it out of a ring or earrings to weigh it? And not everyone has scales of such accuracy. There is an exit! The fact is that everything has long been measured and calculated. And if you want to know how many carats there are in your diamond, you just have to use this data. Naturally, it is worth remembering that the measurements will be approximate. From the table below you can find out if one carat is how much in millimeters.

Determine the weight of a gem by its diameter. How many millimeters are carat?

It should be noted that this table is only suitable for diamonds. round shape, the so-called Kr-57. If you have a stone of a different cut, then you can use the tables presented on sites selling jewelry.

Now you know how to determine how many carats your diamond is!

How not to get into a mess and not buy a fake?

Since people have learned to grow crystals artificially, buying a fake even in a good jewelry salon has become a very real thing. Technologies do not stand still, and sometimes the industry produces such copies of "a la diamonds" that even a specialist will not always be able to recognize a fake. A diamond in the A-cut (round shape) means special, with such a cut, it will be completely reflected by the back facets of the crystal, as if from a mirror surface. If you bring a stone with a crown to the light, then only a sparkling point will be visible. If a real diamond is dipped in hydrochloric acid, then it will not cause any harm to the stone, but stains will remain on the fake. Since diamond is a very tough mineral, it is almost impossible to scratch it. But a diamond easily leaves scratches on any other precious stones. A fake, if immersed in water or glycerin, will be very difficult to see, but a real stone will sparkle. You can also use testers based on the use of ultraviolet and electrical conductivity. But they are unable to detect mussanite - a rather rare crystal of the carbide class with a diamond luster. It is often passed off as a real diamond.

How much are diamonds worth?

The price of this precious mineral depends on many parameters: cut, transparency, presence or absence of inclusions and cracks, color and, of course, size. If the stone is ideal in terms of its transparency, then the price increases many times, while specimens with defects are much cheaper. In terms of color, diamonds are colorless, blue, pink, yellow, purple, brown and even black.

The most expensive ones are colorless and blue. are quite common, therefore they belong to a cheaper group. Obviously, large stones are much more expensive than small ones. Currently, they ask for 7-7.5 thousand rubles for a 0.1-carat diamond; 0.5 carats - 140 thousand rubles; 1 carat will cost 500 thousand rubles.

The largest diamond

The largest golden diamond belongs to. The weight of the stone is 755 carats. Second, not less beautiful stone, has the name Cullian I, its weight is 530.2 carats. This stone is kept in the Tower of London and is crowned with the scepter of King Edward VII. This diamond is just one small piece of a 3,106 carat (621.2 grams) diamond discovered in the Transvaal colony of Britain in 1905. This stone was broken into two large, seven medium and ninety-six small diamonds.

The most faceted in the shape of a pear and has the name "Star of Africa". In third place is a golden diamond bearing the name "Incomparable". The stone was given an unusual triangular shape. The mineral weighs 407.48 carats. A diamond is inserted into a necklace made of

In conclusion, I would like to add that not everyone can afford jewelry with large crystals. Therefore, often a diamond becomes valuable not from how many carats it contains, but from how much you have invested in a gift of love and attention. And even the smallest diamond can become the most expensive in the world!

There are many ways to keep your own savings, and one of them is investing in precious stones and metals. The cost of a quality piece of jewelry or ingot never falls, but only increases in price, so such an investment is always a winning one. To start investing, you need to know what is 1 carat in grams and its weight.

The beautiful half of humanity will surely appreciate the unique beauty of jewelry, and for men this is a good way to improve their affairs. But in order to use finance in this type of investment, you need to accurately understand the quality criteria. Do not be surprised if two similar-looking samples have a big difference in price. Even if the smaller one is more expensive, then you need to look not only at its shape, but also at many other features that form its full value.

What is it and the weight of one carat in grams

This is the name of the unit for measuring the weight of precious stones, adopted back in 1907 and now used all over the world. It got its name from the seed of the carob tree - Ceratonia siliqua, which in ancient times was used as a measure for expensive minerals. The seed has always had a constant weight, so it was very convenient to use it. In addition, it is always at hand, it is easy to find and use. Thus, it was even possible to verify the seller. Much has changed since then, but the adopted system of measure has remained, and now we can definitely say how much one carat weighs - only 0.2 grams.

But some countries did not immediately agree with such criteria. Holland recognized the measurement system only in 1911, the USA in 1913. Great Britain held out until 1914, and the USSR stubbornly disregarded the opinions of others and did not accept a single standard until 1923.

Jewelers also have more precise designations where one ct equals 100 points. With the help of such an easy measure, it became possible to calculate the volume and cost up to a hundredth.

How size and weight compare

The presented gift in the form of a diamond ring necessarily evokes not only delight, but also a desire to understand the size of the insert. It is strongly not recommended to disassemble the decoration for this.

But there is a way out - the severity of each such specimen has long been reduced to its volume and all possible patterns have been calculated. If you want to know exactly how many carats are in a present or purchase, then you can simply refer to the table. For simplicity, everything is in millimeters.

If the gem is round in shape, then such a table will be relevant, if its shape is different, then the calculation method will have to be selected differently. This is an approximate version of the values, since when cutting, jewelers try to preserve the maximum initial data. Therefore, the weight may differ slightly upwards.

In the world of jewelry, trying to measure in standard categories would be a big mistake - specimens larger than 2g are usually so rare that they have a serious value in excess of $ 1,000,000. These piece wonders are named and exhibited in museums, but more often they are in private collections.

If you need to correlate the value and diameter of a ruby, then another table should be used.

For each common subspecies of minerals, there is its own table by which you can determine the number of ct in the jewelry. But most of them are located in jewelry workshops, so you can simply contact a pawnshop or other appraisal firm. So you can find out all the characteristics of the product at once:

• Market value;
• Type of precious stones;
• Approximate purchase price;
• Number of ct.

The main thing is not to try to get the gem out of the jewelry, otherwise it will forever ruin appearance gift, and the pebble itself may split or be lost.

Weight measurement history

Valuable gems were inserted into clothes and jewelry that belonged to tsars, so the need to know exactly how much a sample weighs appeared even then. Before opening modern system reckoning was then as far away as before the question of what is one carat in grams.

So in Babylon they invented a balance in which a weight was placed on the bowl of the apparatus, which needed to be equalized. On the one hand, it could be a diamond or an emerald, and on the other, special weights made of ordinary metal or coins. As soon as the weights were balanced, it was assumed that the weight of the test samples was the same. Traders had to use accurate weights that showed the same weight as other traders, otherwise they could be severely punished.

All these criteria were large, so they came up with an additional unit of measurement - gera. She helped measure small stones and was equal to 0.57 grams.

In Persia, the darik was adopted as the main small unit of measurement, which weighed 5.6 grams. A little later, a denarius weighing 3.85 grams was created. Such a measure in the circulation of money greatly facilitated the life of sellers and buyers, but was still quite large.

It is noteworthy that at the time of the appearance of the darik and the denarius, ct were already and were actively used, but not in Rome and the Greek Empire. They were popular only in Asian countries.

How much is one carat

When the question of how much 1 carat weighs in grams has been resolved - it's time to figure out how much it costs. The price can vary greatly due to many factors:

• Colors;
• Transparency;
• Cut;
• The presence of cracks;
• The presence of inclusions;
• The size.

With the last point of pricing, everything is clear - the larger, the more expensive. Also, for example, when a stone does not have an ideal surface, its score will be several times higher than that of the same product with defects. Color can also affect the price, and quite significantly - they look at the transparency of the stone and glare.

In nature, there are diamonds of blue, pink, yellow, purple, brown and black shades.

The cut also has great importance... One ct can be sold for half a million rubles or more, depending on the cut and the accompanying metal.

There are several basic types of surface treatments:

• Round;
• Oval;
• Princess.

With the "Princess" cutting method, you need to multiply the height of the sample by its width and length. The result is multiplied by a constant factor of 0.0083. The result is the actual weight of the jewel. Finding out the number will no longer be difficult.

The oval cut differs in the calculations - you need to multiply the height by the diameter squared. The result is multiplied by a factor of 0.0062. It is not as economical as the "Princess", but more economical than the round type.

The round diamond is considered the benchmark. Such stones are more expensive, have 57 facets and each of them sparkle. The mass is calculated using a similar formula - the diameter is squared and multiplied by the height. The result is multiplied by a factor of 0.0061. There are also larger samples, they usually have 102 faces, so you cannot calculate them using this formula.

With the last two options, the jeweler tries to leave as much of the original material as possible and subject it to less processing. But at the same time, such species are less valuable. Calculating their carat value will also be more difficult, for this you need to know special formulas. In this case, it is better to turn to professionals.

How it is sold

After the gem has been cut and received a quality certificate, as well as a number or name, it appears in the register of the diamond exchange. It is from there that a sample is first sold, its price is formed according to market conditions, depending on its purity, size and other standard qualities of minerals.

Since the diamond market is the same for all countries, the cost of the same sample will be similar in different countries. Exceptions are those items that are sold by the owners themselves from private collections. In this case, they can demand any amount.

• Small - up to 29 points;
• Medium - from 30 to 90 points;
• Large - from 91 points.

Depending on the category in which the gem falls, its price will change. It is important to understand that the mineral 89 points will be sold much cheaper than the same, but weighing 92 points. Visually and in cut, the difference will practically not be felt, but it will already be jewelry from different groups. The difference in price can be 2 or more times.

Then purity and color are taken into account, which also play an important role. If a diamond or ruby ​​is transparent, then their value rises many times in comparison with a specimen of the same size with inclusions. Color also affects the cost - the less common such a specimen is in nature, the more expensive it will be sold. The most valuable are red, blue and black diamonds.

The presence of even one, the smallest crack makes the product of poor quality, and its assessment decreases several times. Any defect, even imperceptible to an ordinary person, deprives the stone of the opportunity to be sold dearly.

The place of origin, the approximate age of the mineral and the year of discovery are important for the value. The rating also rises if the gem has some kind of history, especially if it was associated with politicians, kings or just famous people.

Trying to sell a diamond without a certificate in this market is impossible, here only those specimens that have been certified by specialists are accepted for auction.

Upon entering the exchange, each lot is checked by its own organization system, the sample data is checked against those indicated in the certificate. If inconsistencies are identified, it will be removed from sale, and the issuer and owner will have problems.

Amazing and greatest

Among all the gems found, the largest is in the private collection of the King of Thailand. The weight of his copy is 755 carats, it was presented as a gift to the ruler for the fiftieth anniversary of several companies at once.

Slightly smaller and in no way inferior in beauty, the diamond weighs 530.2 grams, it is called "Cullinan I" and is kept in the Tower on the scepter of King Edward VII. Initially, it was a huge 3105 ct diamond, weighing just over half a kilogram, but it was divided into a pair of large, 7 medium and almost a hundred small diamonds. Its peculiarity is the complete absence of chips or any cracks, both before and after cutting.

Another really big one among precious diamonds is called "Incomparable" and has 407.48 ct. Exhibited at the Royal Ontario Museum, Canada.

The smaller diamond is called the "Sun Drop". It was found in Africa in 2010, but it is still considered the largest yellow product - 110.3 ct. In its structure, nitrogen atoms are one of the components, which is precisely what many scientists explain its unusual shade.

Trying to answer the question, 1 carat is how many grams, it is worth thinking about who presented the gift. After all, it is not always worth calculating the cost and value of jewelry - not everyone can afford to purchase gems for millions. Sometimes even the smallest, but sincerely chosen and given with love, can be much more expensive. And the pawnshop "Avers" can help with this - here you can find different jewelry for the most demanding taste and even for a small budget. One has only to look here.