GH Color VVS VS CVD Lab Grown Diamonds Cultivated Diamonds

GH Color VVS VS Clarity Cultivated Diamonds Produced In China Are Sold Overseas

Artificial Lab Created Diamonds Description

CVD stands for chemical vapor precipitation, another method for making diamonds in the laboratory. The growth of such diamonds requires the application of the appropriate pressure and temperature to the hydrocarbon mixture in a vacuum chamber.

Artificial diamond is a kind of diamond crystal polymer from 10 to 30 nanometres in diameter, the early artificial diamond due to the nitrogen atoms in the air into the diamond crystal and light sugar thin color, after scientists improve the production method, the production of artificial diamond in appearance and natural diamonds have no difference.

Because of the different natural environment, the molecular structure of synthetic diamond is not the complete octahedral structure of natural diamond, but a complex structure, which will produce phosphorescence phenomenon. With the maturity of synthetic diamond production technology, its cost is low, and can be made into a variety of colors of diamonds and jewelry market. While synthetic diamonds have been produced in laboratories and factories for decades, gem-quality synthetic diamonds have only recently emerged. Originally, man-made diamonds were mainly used for industrial purposes such as making cutting tools, as well as for jewelry.

Plasma Enhanced Chemical Vapor Deposition (PECVD) ): Heated by natural gas and hydrogen, a carbon plasma is formed in a pressure chamber the size of a dishwasher. The plasma continuously deposits on the carbon base at the bottom of the pressure chamber, and gradually accumulates and hardens to form diamond flakes, which are then cut into the shape of a gem. High quality yellow diamonds up to 8.2mm in size. This sample is the largest synthetic diamond single crystal in the mainland by weight and size. This achievement marks a leading position in the field of synthetic diamond (gemstone grade diamond) in China.

Artificial diamond identification require specialized appraisal organization and appraisal instrument can be realized, and as a result of the design technology and equipment capital is very high, only a handful on international laboratory have the ability to identify synthetic diamond and natural diamond, synthetic diamond appraisal on international institutions is IGI international gem institute and GIA stones.

Parameters Of Artificial Lab Created Diamonds

Artificial Lab Created Diamonds Introduction

CVD foster mother is in accordance with a natural diamond drill gia is stone, with high purity, methane in hydrogen, nitrogen and other gases, in the microwave in high way, let the methane and diamond like carbon molecules constantly accumulated to the original stone diamonds, through layers of hyperplasia, this method can produce 10 carat transparent diamond, methane as carbon source, So a diamond grown this way is indistinguishable from a natural diamond. The naked eye cannot tell the difference.

CVD diamond is a kind of polycrystalline diamond synthesized from diamond crystals 10 to 30 nanometers in diameter.The production process of cultivated diamonds is similar to that of synthetic diamonds, and the production capacity is concentrated in China's Henan province. CVD synthesis environment requires high temperature and low pressure, and the product after synthesis is flake, crystal impurities and higher purity.

CVD diamond and natural diamond chemical composition and physical properties are exactly the same, from the use has no difference, the price is the biggest difference, the price of CVD diamond is currently about one-fifth of the natural diamond.

With the continuous improvement of science and technology, the diamond produced by CVD method can meet the 4C standard.

Like the HPHT diamond manufacturing process, the CVD manufacturing process is improving, allowing manufacturers to create larger stones with greater color and clarity.

Artificial Lab Created Diamonds Details