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10 Cards in this Set
- Front
- Back
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Artificail material |
Produced by human manufacture |
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Synthetic material |
an artificial gemstone must have a natural gem counterpart Therefore a mineral of the same compostion and structure must exist |
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Mineral for the benefit of a synthetic material |
solid inorganic crystallin natural material |
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A synthtic |
that being used as a substitute for its natural counterpart |
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A synthtic which is also a simulant |
a synthtic material that is being used to imitate another stone or another species; this is also called a simulant |
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Two main methods for growing synthtic diamond |
High pressure, high temperature (HPHT) Chemical vapour deposition (CVD) |
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Method of production for HPHT |
Belt BARS Tetrahedral press cubic press octahedral press toroid press |
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Five key ingediants needed for HPHT |
A source of carbon High pressure High temperature A catalyst A seen crystal |
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A source of carbon |
graphite and diamond powder |
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High preassure |
in the reigion of 50 - 80kb (Kilobar, 1000X atmospheric pressure) |
