GIA: Library: FAQ Detail Page

Synthetic diamonds grown using the High Pressure / High Temperature (HPHT) method are being produced by several companies around the world. This process uses equipment which mimics the pressure and heat-filled environment that natural diamonds are formed in at great depths in the Earth. Synthetic diamonds have been produced in a variety of colors including yellow, blue, green, pink, red, purple, and colorless. Although they are nearly physically, optically and chemically identical to their natural, mined counterparts, these synthetic diamonds can be identified by a trained gemologist using standard gem-testing equipment and techniques.

Click on these links for more information on synthetic diamonds.

Gemesis synthetic diamonds
Gem synthetic diamond

Click on the following links for more information on separating natural from synthetic diamonds.

Detecting synthetic diamonds - I
Detecting synthetic diamonds - II
Detecting synthetic diamonds - III
Detecting synthetic diamonds - IV
Detecting synthetic diamonds - V
Detecting synthetic diamonds - VI
Detecting synthetic diamonds - VII

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