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All OUR RING CAN PASS THE DIAMOND TESTER
Although synthetic diamonds from laboratories or factories have been around for decades, synthetic diamonds with gem quality have only recently appeared.
There are also many types of laboratory-grown diamonds, and I personally think that Moissanite is a good choice with high cost performance. Moissanite is a common name for synthetic silicon carbide, and it is the world's top naturally cultivated "diamond". It itself is colorless. Because of its high refractive index, it has a rich fire color, which is more than 2.5 times that of South African diamonds. It is almost invisible to the naked eye. Moissanite diamonds are divided into two types: domestic and imported. The better the quality, the higher the price.
A research team from Cardiff University in the United Kingdom recently stated that it only takes a few days to "bring" a 1-carat diamond in the laboratory. And it does not look any different from a diamond that has been lying deep in the earth for millions of years.
Originally, synthetic diamonds were mainly used for industrial purposes such as manufacturing cutting tools, but now they are also used in jewelry.
The law of fair trade requires man-made diamond dealers to truthfully state their quality when selling, and use generally accepted vocabulary to describe them, such as "man-made", "man-made" or "laboratory manufacturing." Almost all man-made diamonds belong to type Ib, and this type only accounts for less than 2% of natural diamonds. There is an inexpensive device that can verify type Ib diamonds, but to determine whether a diamond is synthetic, it depends on the testing of a qualified gemological laboratory.
In 1954, synthetic diamonds were successfully synthesized for the first time. At that time, a group of researchers from General Electric Company produced a diamond in a laboratory. They imitated the environment that diamonds formed in nature and applied extreme high temperature and pressure to carbon. Also in the 1950s, another method of manufacturing synthetic diamonds was successfully developed. This method, called chemical vapor deposition (CVD), removes carbon from carbonaceous diamonds under very low pressure and relatively low temperature. The mixed gas is deposited into a diamond matrix.
The quality and appearance of man-made diamonds are indistinguishable from natural diamonds. At the beginning, due to the lack of sophisticated technology of man-made diamonds, diamond dealers could use a very simple method to confirm whether the diamonds were grown in the laboratory. They used strong magnets because there are metal crystals left in the culture process, strong magnets. Then the diamond can be sucked up.
However, with the continuous maturity of man-made diamond technology, the original old method has become invalid. The identification of man-made diamonds requires specialized identification agencies and identification instruments. Because of the high cost of the designed technology and instruments, only a few laboratories in the world have the ability to identify synthetic diamonds and natural diamonds. Not long ago, the well-known gem-level synthetic diamond manufacturer in the United States will launch its synthetic diamond jewelry product line. All diamonds must be authenticated by IGI before they can be sold. At present, the grade of man-made diamonds can reach more than half a carat, H color and VS grade.
The synthetic diamond certificate will clearly indicate that the diamond is a synthetic diamond, which is different from a natural diamond and is used to protect the interests of consumers. Consumers should not be greedy to buy diamonds of unknown origin and without authoritative certification to avoid being deceived.
