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| QUARTZ
NATURAL
COLOR
Hardness
7 |
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QUARTZ
CRYSTAL
Other
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Windowed quartz 176 grms.70 x
64 mm.(externally undamaged) Origin: Madagascar
SOLD
ref:QUCRw176g

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| Hardness: |
7 |
| Specific
Gravity: |
2.65
- 2.91 |
| Refractive
Index: |
1.544
- 1.553 |
| Chemical
Composition: |
SiO2,
Silicon Dioxide |
| Crystal
Structure: |
Trigonal |
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