Lab Created Diamond, Lab Grown Diamond, Man Made Diamond, Synthetic Diamond

HPHT CVD Diamond – Lab Grown Diamond, Lab Created Diamond, Man Made Diamond

HPHT CVD DIamonds – Lab Grown Diamonds

We deal HPHT/CVD Rough and Polished diamond HPHT/CVD Diamond are grown in a situation created in laboratory.HPHT CVD Diamonds.jpg

HPHT diamonds/CVD diamonds

Diamonds are pure carbon. Ever since this was discovered in 1797, many people have tried to produce diamonds artificially but the real breakthrough came in 1955, when General Electric managed to produce a lab grown diamond using a revolutionary Super Pressure Project which helps to produce diamonds. Ever since there has been a gradual growth in the production of  lab grown diamonds, 90% of which have industrial uses. Currently, diamonds are produced using two techniques- HPHT and CVD diamonds

HPHT diamonds

The High Pressure High Temperature process imitates the way diamonds are formed naturally. A carbon ‘seed’ is put in a specially designed press where it is given high pressure and  a high temperature of about 1400 Degrees Celsius  is used to form colourless and high quality diamonds which can then be used for industrial use and the jewellery industry.

Currently there are three main ways HPHT diamonds are made-

  • The Belt Press
  • The Cubic Press
  • The BARS apparatus

Of these, the Russian designed BARS apparatus is the most popular. It consists of a ceramic cylindrical ‘synthesis capsule’ which is placed in 8 steel anvils. The whole apparatus is then locked and oil is added which is heated, giving pressure which ultimately leads into the creation of a diamond.Hpht diamonds (2).jpg

CVD diamonds

Chemical Vapour Deposition diamonds do not require pressure, unlike HPHT diamonds.  This system was developed in the 1980s. This process involves the heating of a mixture of hydrocarbon gas (generally methane) and hydrogen in a vacuum chamber at extreme low pressures. This results in the formation of diamonds which are free of any chemical inclusions or other impurities.

These technologies are helping the introduction of lab grown diamonds to the jewelry and other allied industries which traditionally used mined diamonds. We hope to see a day where the sale of lab grown diamonds exceeds that of mined diamonds.

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