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| TOURMALINE NATURAL COLOR Hardness 7.5 |
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RETURN TO »» TOURMALINE CRYSTAL
114 grms. Tourmaline crystal on quartz Single 78.9 x 52 x 38 mm. Size of individual crystal: 46.3 x 11.4 x 18 mm (Transparent) rubellite color ( Externally undamaged ). NATURAL SHAPE Enhancement: none (N) stone PRICE USD 700.00 ORIGIN: Madagascar ref:TrQ114g
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| Hardness: | 7 - 7.5 | |
| Specific Gravity: | 3.0+ | |
| Refractive Index: | 1.62 - 1.68 |  Tourmaline
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| Chemical Composition: | Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide | 
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| Crystal Structure: | Trigonal |
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