White GH Color Rectangular CVD Lab Grown Diamonds VS SI

White GH Color VS SI Purity Rectangular Diamond Lab Grown Diamonds From Manufacturer

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 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 color syrup, after scientists improved production methods, production of synthetic diamond and natural diamond without any differences in appearance.

Because of the different natural environment, artificial diamond of molecular structure is not completely octahedral structure of natural diamond but a complex structure, which can produce phosphorescence. 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 artificial diamond is mainly used for manufacturing cutting tools and other industrial USES, also be used in jewelry.

Plasma Enhanced Chemical Vapor Deposition (PECVD) ) : make the gas and hydrogen gas when heated, the size of a dishwasher in the pressure chamber formed a kind of carbon plasma, the plasma deposition on the carbon layer at the bottom of the pressure chamber continuously, and gradually accumulate and hardening, resulting in a laminate type of diamond, and then cut into gem shape. 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, This diamond and natural diamond is no different from growing up, the naked eye can't 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