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| RUBELLITE NATURAL COLOR Hardness 7.5 |
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| Tourmaline chemical composition is (Na, Li,Ca) (Fe2, Mg, Mn, Al)3 Al6 I(OH)4 I (BO3)3ISi6O18I . |
| Crystaline system: Trigonal. |
| Occurences: In the acid magmatic rocks and associated pegmatites, limestones and schists, placers. |
| Coloured tourmalines are related to sodolithic pegmatites. |
One distinguishes two principal types of tourmalines: the hexagonal type and the triangular one. |
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1.96 cts. Oval rubellite tourmaline single |
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| Stone Price: 656.00
ref:Tro 196
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 Depth:4.1 mm.
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- Scale determining the purity of a stone. - |
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| FL |
NFL |
SI1 |
SI2 |
MI1 |
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| Flaw less |
Near flaw less |
Slightly included 1 |
Slightly included 2 |
Medium included 1 |
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| MI2 |
MI3 |
VI1 |
VI2 |
HI |
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| Medium included 2 |
Medium included 3 |
Very included 1 |
Very included 2 |
Highly included |
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