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What color diamond is the cheapest?

The bright colors and sparkle of the yellow diamond have captured the hearts of stars around the world. Today, not a single diamond collection is complete without products with these unforgettable stones. Learn more about shades of color from light yellows to the richest stones. Come to Colenoir to see yellow diamonds with your own eyes Fancy Yellow Diamond

yellow diamond

The yellow color of diamonds is the result of nitrogen impurities in the chain of carbon atoms. They evenly remove shades of blue, cyan and violet from the spectrum, which makes the diamond yellow. It is correct to consider diamonds that have a faint color tint to be yellow. Starting with the QR color (8-1), stones of well-colored cuts – cushion, radiant, oval, pear, heart, trillion – can already be considered yellow. But they begin to look truly yellow when framed by 750-carat yellow gold and stone color from UV (8-3) and higher. If the color of the stone is not pure, and brown, green or other shades are mixed into it, the stone is considered brown-yellow, orange-yellow or green-yellow. GIA Certificate for Fancy Yellow Diamond A special feature of this type of certificate is the indication of uniformity of distribution (Color Distribution) and shades of color (Color Grade), which is not used for the standard scale.

Yellow Diamond Shades Chart

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    Colored Diamonds:
    Be careful, it is freshly painted!

    It’s nice to give your loved one a diamond ring. It’s even more pleasant to evoke an exclamation of surprise from her by presenting jewelry with colored diamonds, which are extremely rare in our stores. But think before you part with your money.

    A few months ago, colored diamonds appeared in Moscow jewelry stores. So far these are isolated cases, however, according to the capital’s jewelers, colored diamonds will soon become very popular in our country. And in Asia, and in Europe, and in the USA, they have long been in fashion.
    Jewelers usually use colored diamonds to create compositions from several or many stones. The fact is that many buyers prefer such jewelry to those that contain rubies or sapphires along with diamonds. Colored diamonds are especially good in products with “invisible” mounting, where stones of the same color are located close to each other.
    Meanwhile, natural colored diamonds are very rare. And they often cost an order of magnitude higher than colorless ones. Therefore, in the late 80s, first in Israel and then in other developed countries, diamonds began to be colored. Such stones are only 150-200 dollars more expensive than colorless ones.
    In a jewelry store in any Western country, the buyer will definitely be warned that the diamond is artificially colored. At least on the legal stone market, they fully adhere to the recommendations of the World Federation of Diamond Bourses and the International Diamond Manufacturers Association and always report that stones have been artificially processed. (The World Federation of Diamond Bourses requires that concealing the fact that a diamond has been treated artificially at the time of sale is considered fraudulent and an activity incompatible with federation membership.)
    Russian jewelry stores are another matter. Domestic cut diamonds (not yet set) are sold here with Russian-style certificates (some stores learned about this only a couple of months ago). But the turn for jewelry has not yet come. Especially before imported ones.
    One day I went into a jewelry store in Petrovsky Passage. One ring in the display case seemed pretty to me. “Tell me,” I turned to the saleswoman, “who made this ring?” The question perplexed not only the saleswoman, but also the store owner who happened to be nearby. “It’s a French-Canadian company, and the diamond is from De Beers,” he explained somewhat hesitantly. I myself guessed that the diamond was from De Beers: this South African concern is a monopoly supplier of diamonds used in jewelry made in the West. Then I asked for a certificate. This request puzzled the store owner. After that, I simply did not ask about the availability of an expert opinion from the Gemological Institute of America (GIA) or the European Gemological Laboratory (a precaution common in the West).
    The diamond I liked was the most ordinary, colorless one. However, there is no doubt that if I had inquired about colored stones in a Western-made product, the answer would have been approximately the same, and it would have been impossible to determine whether it was a natural stone or an artificially colored stone.
    So what, you ask. What difference does it make in the end, the main thing is that you like the decoration.
    There is a difference. First of all, the price. A natural emerald green diamond (very rare) costs approximately $6000 per carat. A stone with a brown tint (the cheapest) costs an average of $600 per carat. After artificially coloring such a stone in emerald green, its price will be no more than $800 per carat – $100 for labor plus $60-100 profit. But not $6000. Moreover, according to Russian experts, the change in the color of diamonds is not irreversible – the stone will retain its color for no more than a year. It is unlikely that you will be happy to discover that a supposedly natural colored diamond you bought for a lot of money suddenly loses its color.
    In addition, it is very important to know where the stone was processed. Because the technology of artificial coloring of diamonds involves radioactive irradiation of stones. If the processing was carried out by the Israeli companies Koss Diamonds and Dianer Diamonds (which, in fact, came up with the idea of ​​​​dying diamonds), then the stones are tested for residual radiation at a nuclear center and receive a certificate stating that they are not radioactive.
    But recently brokers have appeared offering services for coloring batches of diamonds to less experienced or novice diamond workers. They are believed in the West to have connections with the nuclear centers of Eastern Europe and Russia. But here the process of processing a diamond to change color is impossible to control. The radiation power is not regulated, and these stones can have a fairly large dose of radiation. It is clear that without a certificate it is impossible to establish where the stone was processed.
    So if you have already decided to buy jewelry with a colored diamond, it is better to do it not in Russia, but in Amsterdam or Antwerp – the world centers of diamond trade.

    One in a million
    This is how collectible rare diamonds are characterized in the diamond business. But even this is an exaggeration. In fact, there are even fewer large, high-quality colored stones. However, among the most famous diamonds there are many yellow, pink, blue, orange, brown, green and red.
    The history of famous stones is full of secrets and legends. For example, perhaps the most famous of all diamonds, the “French Blue,” or “Hope,” a bright blue color, originally weighed 112 carats. Purchased in 1668 by Louis XIV, it was recut into a 67-carat heart-shaped stone. During the French Revolution, it was stolen and discovered only 40 years later in London, where it was bought by the English banker Henry Thomas Hope, whose name the stone bears to this day. While in the possession of the Hopes, the blue diamond gained fame as a stone that brings misfortune: all members of the Hope family died in poverty, as did its last owner, Edward McLean. Now “Hope” is kept in the Smithsonian Institution in Washington.
    Another famous colored diamond is the Darinur (“Sea of ​​Light”), a magnificent pink stone with a rectangular tabular shape weighing about 185 carats from the Shah’s collection in Iran. It is often identified with the amazingly beautiful Indian diamond, described in the 1739th century by the traveler and merchant Jean-Baptiste Tavernier and called the “Great Table”. It is believed that this stone was captured by Nadir Shah during the sack of Delhi in 1967. Many rulers of Persia decorated themselves with “Darinur”. The last Shah of Iran also wore it – the diamond was on his headdress during his coronation in XNUMX.

    Diamond paints
    Artificially colored diamonds appeared on the world market in the late 80s. There are several laboratories in the world that have their own know-how to change the color of crystals. Israeli diamondsmiths have the most experience and were the first to color diamonds.
    There are mainly three types of sources used to irradiate jewelry stones: gamma radiation sources, accelerators, and nuclear reactors. Most often, an already cut stone is irradiated with a stream of electrons in electron accelerators. At high irradiation powers, the color of a diamond changes as a result of the displacement of atoms and electrons in its crystal structure. The color that a stone acquires depends on its chemical composition, and therefore on the deposit.
    The natural color of a diamond, as well as the change in its color during processing, determines the presence of nitrogen or boron impurities in the stone. A stone of an unusual color cannot be made lighter or discolored. You can change the color of a diamond from brown to orange, from blue to green. Through irradiation, it is possible to ensure that the stone acquires green, blue, golden, canary (yellowish) and cognac (champagne) colors. Pinks and purples are harder to achieve. This can be done if there is no nitrogen in the stones.

    • Magazine “Kommersant Money” No. 48 dated December 24.12.1997, 52, p. XNUMX

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