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| R.I. :
1.629 - 1.637
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Hardness :
8 |
| Chemical Comp. : |
AL(F,OH)2SIO4
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| Density : |
3.52 - 3.56
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| Crystal Group : |
Orthorhombic
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Topaz Cats-eyes – Some topaz display a cats-eye effect which are considered rare gems.
Topaz is a fluorine aluminium silicate and comes in yellow, brown, honey, green, blue, pink and also colorless. |
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