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production of the first synthetic diamonds. HPHT was first used to change the color of diamond in research laboratories in the 1970's.

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A synthetic diamond (also known as an artificial diamond, cultured diamond, or cultivated diamond) is diamond produced in an artificial process, as opposed to natural diamonds, which are created by geological processes.

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CVD Diamond - FAQ

Frequently Asked Questions about CVD Diamond. What is CVD ? What is CVD diamond ? Why is it difficult to synthesize diamond ? How does it work ? What gases are used for diamond CVD ?