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
| Product Name | Synthetic (Lab created) diamond |
| Technology | HPHT |
| Color | EFG |
| Size | 4CT-16CTS |
| Grade | VVS VS |
| Used | Polished Diamond Jewelry (necklace,ring) |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
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
