Natural diamonds are more difficult to mine and more expensive, and colored diamonds are even rarer and more expensive. Lab grown diamond have entered the public consumption field, but many people do not know enough about fancy color lab grown diamond, so how their color is made?
Colorless lab grown diamond:
Colorless lab grown diamond are produced using the HTHP method and the CVD method. The HTHP method used to produce diamonds has the element N in its composition, which is why our lab lab grown diamond appear yellow. In order to produce colorless diamonds, the N element must be absorbed, so diamonds produced by the HTHP method are colorless type IIa.
Blue Lab grown diamond:
Natural blue lab grown diamond are type IIb, which contain the element B (boron). Using the HTHP method, an N absorber is added and the B element is added again to create IIb diamonds. Synthetic IIa diamonds using the CVD method with the addition of element B can also produce Type IIb diamonds.
Yellow Lab grown diamond:
Commonly lab grown diamond are HTHP (High Temperature High Pressure) method and CVD (Chemical Vapor Deposition) method, where most of the diamonds cultivated by HTHP method are yellow series, this synthetic method diamonds grow faster and cannot form natural diamond N3 color center, synthetic diamond types are mostly Ib type, Ib absorbs blue light thus appearing yellow.
Red lab grown diamond:
Red lab grown diamond are synthesized by HTHP method Ib type diamonds, after irradiation treatment blue or blue-green, again heating treatment, you can get pink and fuchsia lab grown diamond.
Green Lab grown diamond:
Natural green lab grown diamond are affected by natural radiation will produce GR1 absorption, then the lab grown diamond appear green, you need to put the lab grown diamond into artificial irradiation equipment, such as cyclotron, electron irradiation treatment, neutron irradiation treatment, through the above methods can get green synthetic diamonds.
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