Lab Grown Diamond Wholesale Price from China Supplier

Lab-grown diamonds are generally produced by chemical vapor deposition (CVD) or high pressure high temperature (HPHT) methods. CVD uses ultra-pure carbon-rich gases in a controlled environment. It produces Type IIa diamonds, which are quite rare in nature and account for less than two percent of all mined diamonds. Type IIa diamonds have no, or almost no, impurities; they are the purest, highest-quality diamonds. HPHT, used since the 1950s, puts a pure, solid carbon source under high pressure and high temperature. In the presence of a catalyst, the pressurized and heated carbon crystalizes into diamond. HPHT is sometimes used to improve the color of mined or lab-grown diamonds.Our proprietary CVD process allows us to produce stunning diamonds in color and size combinations that are seldom found in mines, such as fancy color pink diamonds that are prized for fine jewelry.

lab grown diamond cvd hpht diamond wholesale China

lab grown diamond 1 carat



Lab grown diamond size(round brilliant cut): 1.0  1.25   1.30   1.5   2.0   2.5   3.0   4.0   5.0   6.5 mm

MOQ: 2 carats

Color: EF, GH

Clarity: VVS - VS

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Cutting

The cut of the Lab-diamond is a measure of the quality of the shape, geometry, and finish of diamond gemstone. Only round brilliant diamonds receive formal cut grades on a scale from ldeal (the best) to Poor. We are uncompromising on cut quality to ensure all of our diamonds have optimal brightness, fire scinillation, andmaximum light performance.


Clarity

Clarity is a measurement of how many blemishes or inclusions are present in the Lab-diamond, which can be eitherdefects in the diamond crystal or microscopic foreign particles within the diamond. The lower the darity of adiamond, the m ore imperfections in the diamond. Clarity is graded on a range from Internally Rawless to Induded


Color

 A perfect diamond, with no impurities and no defects, is completely colorless. Impurities such as nitrogen causeundesirable yellow or brown tones in the diamond Color is graded on a range of letters from D to Z

Carat

The carat weight of a Lab-diamond is a measurement of its weight One carat is exactly one- fifth of a gram (0.20 g).When a diamond is properly cut the carat weight defines the size of the diamond, and larger diamonds  tend to be more expensive.



4C Diamond Chart