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Lab Grown Diamonds Classification

There are two methods for mass production of diamonds in the market: Chemical Vapor Deposition (CVD) and High Pressure High Temperature and High Pressure (HPHT).
CVD chemical meteorological precipitation method
CVD uses one or more gases to chemically react on a heated solid substrate and to coat it with a solid film. The so-called CVD (Chemical Vapor Deposition) diamond is a natural diamond bare stone as the mother stone, the use of high purity methane, plus hydrogen, nitrogen and other gases assisted, in the microwave oven under high pressure, so that methane and diamond like carbon molecules continue to accumulate on the diamond stone, after layer by layer of proliferation. It can form transparent diamonds up to 10 carats. In order for CVD diamonds to grow smoothly, the carbon source is usually methane with diamond structure. Methane can be thought of as a one-atom diamond pressed out of hydrogen. This kind "grow up" diamond, quality and natural diamond a few without 2 send, naked eye discernible.
HPHT high temperature and high pressure method
HPHT has several different machines, all of which work on a similar principle, creating a high temperature and pressure environment at the center of the machine that crushes carbon powder into diamonds. A metal catalyst is required in the middle, so many HPHT diamonds contain metal impurities. Early can only produce yellow small particles, as industrial abrasive use; With technological progress, many domestic manufacturers can produce large colorless particles with less metal content, reaching the grade of jewelry. Domestic production capacity is mainly concentrated in the bare weight of 1 carat or less after cutting. Russia has a family once grew a cut after 10 carat diamond, but this kind of large particles pick one in ten thousand, not energy production at present.

Characteristics Of Lab Grown Diamonds

From a scientific point of view, cultivated diamonds are exactly the same as natural diamonds, the only difference being where they are formed.

Prospects And Advantages Of Lab Grown Diamonds

As one of the emerging choices of global diamond consumption, cultivating diamond has obvious competitive advantages in quality, price, environmental protection and technology. With the continuous improvement of diamond synthetic technology, the rapid decrease of cost and price, and the change of market consumption concept and habits, the market attention has been significantly increased, and it has become one of the most important development directions of artificial diamond industry. According to Bain, the global production of cultured diamonds in 2020 will be around 7 million carats, with a penetration rate of around 6.5% and a projected growth rate of 15-20% in the future.

Lab Grown Diamonds Details

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