4-15 Carat EFG VVS VS HPHT Single Crystal Diamonds For Artificial Jewellery Material

4-15 Carat EFG VVS VS HPHT Single Crystal Diamonds For Artificial Jewellery Material

Lab Raw Uncut Rough Diamond Description

Lab grown diamonds are also named lab created diamonds, man made diamonds and synthetic diamonds. There are two main methods to create lab grown diamonds: CVD and HPHT.

Chemical Vapor Deposition is a growth method for cultivating diamonds. CVD (Chemical Vapor Deposition) diamonds are based on diamond seeds. With the aid of high-purity methane, hydrogen, nitrogen and other gases, the carbon molecules in methane and diamonds are continuously accumulated on the original diamonds in a microwave oven under high pressure. After layer-by-layer diffusion, transparent diamonds can be formed. The quality of this lab grown diamond is almost the same as natural diamonds. CVD diamond is a high-tech synthetic diamond whose material is mainly carbon, just like natural diamond. Its hardness, density, thermal conductivity, brightness, sparkle and fire color are almost the same as natural diamonds

There is also HPHT (High Pressure High Temperature) method. HPHT was applied to gem-grade cultivated diamonds earlier, and HPHT cultivated diamonds appeared in the jewelry market as early as 2010. HPHT diamonds usually have high color while CVD diamonds usually have high clarity.

Parameters Of Man Made Lab Created Diamonds

Man Made Lab Created Diamonds Introduction

Artificial diamond is composed of 10 to 30 nm in diameter diamond crystallization aggregation of crystal diamond, more early artificial diamond with nitrogen from the air atom into diamond crystals and light syrup in color, the improved method, after scientists now the production of synthetic diamond and natural diamond without any differences in appearance, because of the different production, The molecular structure of artificial diamond is not the complete octahedral structure of natural diamond but a complex structure, which will produce phosphorescence phenomenon. With the maturity of artificial diamond production technology, its low cost, and can produce a variety of colors of diamonds and in the jewelry market.

A very small natural diamond is placed in the center as a seed at 2300℃ at 15 to 18 atmospheres of high temperature and pressure. Around the seed diamond is a hot metal liquid, and on top of the metal solution is graphite. In this environment, the carbon atoms in the graphite will line up from the metal atoms to the diamond and form a new diamond.

In the past, synthetic diamonds and processing costs are still very high, especially in the equipment, technology, process and other aspects of the requirements are still very high, but there is a small number of synthetic diamonds on the market in the world, but there is no price advantage. But with the development of technology, synthetic diamonds are now commercially viable.

Man Made Lab Created Diamonds Details