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LOOSE RUBELLITE TOURMALINE 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, marble 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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2.52 cts. Oval rubellite tourmaline single |
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This stone is slightly included. That means that its clarity is slightly altered, but its color is close to that of a ruby. |
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Stone Price: USD 784.00
ref:Tro 252
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Depth: 5.9 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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