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Lab Cultivated Rough Diamonds,
6.0ct/pc HPHT Lab Grown Diamonds,
Lab Cultivated synthetic diamonds
White Color HPHT Lab Grown Rough Diamonds DEF VVS VS Clarity Round Uncut LGD
What Are Lab Grown Diamonds?
Laboratory-grown diamonds are a new source of diamonds grown on Earth. They are the same as diamonds extracted from the ground – chemically, physically and optically. Diamond, also known as diamond, is made up of carbon atoms, like graphite, the main component of a pencil lead. However, the difference in structure makes graphite rank only at the lowest grade of 1 on the Mohs hardness scale, and diamond at the highest grade of 10. The key to the formation of different structures between carbon atoms lies in pressure and temperature. Therefore, diamonds can be synthesized by artificially creating the corresponding pressure and temperature conditions according to the carbon phase diagram.
How Does A Diamond Grow Above Earth?
There are two basic techniques for carbon to crystallize on diamond substrates – namely high pressure and high temperature (HPHT) technology and chemical vapor deposition (CVD) technology.
During the CVD process, methane gas uses microwave energy to be activated to a temperature of about 2000-3000 F, causing it to rupture and release carbon atoms that are deposited onto a diamond substrate. It grows slowly layer by layer, atom by atom. This is a natural crystal growth process that leads to similar types of inclusions and defects that appear in mined diamonds, and once the process begins, it is beyond human control.
In the HPHT process, diamond seeds (real diamond) are covered in the growth chamber along with graphite and metal catalysts and covered with a ceramic casing. As the pressure and temperature rise to about 55 K Bar and 1500 C, respectively, the carbon atoms are released from the graphite by a melting catalyst, and the atomic process of crystal growth begins on the diamond seed. Diamonds grow layer by layer, atomically over a period of 8-10 days. New diamonds are cleaned and can be cut and polished just like any other rough diamond extracted from the ground.
Lab Grown Rough Diamonds Details
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