The Chemistry of Gemstone Colours
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| PEARL | TURQUOISE | OPAL | JADE | PERIDOT | GARNET |
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Produced in soft tissue of shelled molluscs. The thinner the layers of the pearl, the finer the lustre. |
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| PEARL | TURQUOISE | OPAL | JADE | PERIDOT | GARNET |
|
Produced in soft tissue of shelled molluscs. The thinner the layers of the pearl, the finer the lustre. |
