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LOOSE SET TOURMALINE NATURAL COLOR Hardness 7.5 |
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Crystaline system: Trigonal. |
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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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2.74 cts. Set Rectangle chrome tourmaline & rubellite single |
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Stone Price: USD 684.00
ref:SetTOr/ch274
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