Name | QUARTZ | Variety | SMOKY QUARTZ | Origin | Virgen de Lapa, Minas Gerais (Brazil) | Hardness | 7 | Composition | SiO2 | Crystaline sys. | TRIGONAL
| Size | 38 X 23 X 20 cm | Weight | 19,3 Kg |
Description:
Quartz was chosen by the geologist Friedrich Mohs to represent grade 7 in his famous scale of hardness dating back to 1825, and which is still valid nowadays. Here we show a magnificent crystal of smoky quartz of vast dimensions. It is a "floating" crystal which means that it is finished on all sides. |
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QUARTZ
VARIETY SMOKY QUARTZ
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