Basic introduction:
Appraised by GIA authorities, Mosan diamond has the optical and physical characteristics of South African diamonds, and its fire color is more than 2.5 times that of South African diamonds. It is known as the brightest gem in the world abroad. Therefore, like South African diamonds, Mosang diamonds will never change color, never fade and always shine.
Mosan diamond is a patented product developed by C3 Company of the United States with an investment of US$ 45 million, which was listed in June 1998. Its chemical composition is SiC, almost colorless, with refractive index of 2.56-2.69, dispersion of 0. 104, birefringence of 0.043, hardness of 9.25 and density of 3.22g/cm3.
Detection method: The thermal conductivity meter can't distinguish diamond from Mosan diamond, so it must be identified by the 590 colorless silicon carbide/diamond detector of C3 company in the United States. Using diiodomethane (density: 3.32g/cm3) liquid, it was found that mosan stone floated and diamond sank. You can also use a magnifying glass to observe inclusions and fire method for auxiliary identification.
Extended data
Source and characteristics
1, Mosan diamond is a common name for synthetic silicon carbide. 1980 was successfully developed in the laboratory, and 1996 was exclusively produced by C3 Company, an American listed company. Combining cutting-edge technology and patented super-perfect cut technology, this crystal-clear high-tech gem shows more brilliant sparks than diamonds, and has been successfully introduced into the market, causing numerous international sensations and growing day by day.
2. "American Charles Koval Mosan Diamond Company" quickly became the largest Mosan diamond sales company in the world, selling Mosan diamonds all over the world. After the expiration of the patent protection period, research institutions and enterprises around the world quickly developed and produced mosan stone, which made the price of mosan stone drop a lot. At present, the color of Mosan diamond in China can be close to D color, which is almost the same as that of American C3 company.
3. From the color I and below a few years ago, the quality has improved. In 20 17, a perfectly cut Mosan diamond with eight hearts and eight arrows appeared, and the price was lower than that of many American C3 companies, which almost forced the products of American C3 companies to withdraw from the domestic market.
4. Mosan diamond itself is colorless. Because of its high refractive index, its fire color will produce different fire color effects with the intensity of light in different environments. This is one of the charms of Mosang diamond, which is rich in fire color and yellow in dim light environment. The H-I color of Mosan diamond is the best, with the clarity of VVS 1, patented cutting and the brightest fire color, and the colorful fire color is more than 2.5 times that of South African diamond.
5. The color of 90% South African diamonds popular in the market is I-J, which is the same as the color of Mosan diamond. This is the biggest reason why scientists cultivate Mosan diamonds into H-I color when they cultivate them, because Mosan diamonds are almost the same as South African diamonds.
Pay attention to your health
1. The care of Mosan diamonds is the same as other gems. Therefore, natural mineral components containing carbon and silicon have stable physical properties. The color and purity of fire are constant. Mosang diamond is lipophilic, so it can be cleaned with ordinary soapy water and soft toothbrush when necessary. However, no matter what kind of jewelry you wear, you should avoid violent collision and store it separately to avoid scratching each other.
Mosan stone was found in ancient meteorites. Fifty thousand years ago, a meteorite broke through the sky and fell in Arizona, forming a huge crater on the surface, which was 570 feet deep and one mile in diameter. Some meteorite remains were scattered in the desert.
3. 1893, Dr. Henry Moisan, a French chemist who won the Nobel Prize, found these glittering silicon carbide fragments in Diablo Canyon. 1905, this new gem is named after Moisan internationally to commemorate Henry Moisan's contribution to Mu Wasang's scientific and technological research.
4. Moss stone is a kind of natural gem, which is very rare and can only be found in extreme environments, such as inclusions in meteorites, mantle rocks and even small diamonds.
evaluate
Ordinary consumers only need to look at the cutting grade evaluated by GIA. In fact, these complex data GIA have summarized them into a comprehensive cutting evaluation.
1, full depth ratio: the percentage of the height of the diamond to the average diameter of the waist. This ratio depends on the cutting. GIA's standard is 56.8-62.4% as good-excellent; ;
2. Table width ratio: the percentage of table width relative to the average diameter. The size of the table is related to the size of the diamond and whether it will leak light, which is very important. GIA's standard is 52.5%-58.4% excellent. Americans prefer a small desktop, which will make diamonds full of fire. So some people say that the bigger you buy, the bigger it looks, and it looks really big, but if there are fewer diamonds, there will be no fire, and no matter how big it is;
3, diamond waist thickness: too thin waist, easy to damage the edge collapse, too thick waist will increase weight;
4. bottom tip: no. Generally speaking, the bottom tip of small diamonds is reserved, and some big diamonds will wear off the bottom tip in advance to protect the bottom tip from being damaged, thus increasing face;
5. Except for the diamond color and clarity grading table, bar codes and laser squares are all forged.
References:
Baidu Encyclopedia-Mosangzuan
References:
Baidu encyclopedia -GIA certificate