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SAPPHIRE MINERAL
NATURAL COLOR
Hardness
9 |
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40 gr.
blue-grey Sapphire crystal single
( triangles on the head )
33 x 22.5 x 21 mm. Opaque.
ORIGIN: Madagascar
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USD 175.00
ref: SAPbr40g
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Hardness: |
9 |
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Specific
Gravity: |
3.9
- 4.1 |
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Refractive
Index: |
1.76
- 1.78 |
Corundum
data |
Chemical
Composition: |
Al2O3,
Aluminum Oxide |
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question |
Crystal
Structure: |
Trigonal |
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