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RUBY MINERAL
NATURAL
COLOR
Hardness
9 |
|
|
Ruby, natural
crystal 26 grms. / 28.4 x 21.6 x 15.2 mm. (
triangle on the head ) |
USD
290.00
ref RUmp26gr
|
Hardness: |
9 |
|
Specific
Gravity: |
3.9
- 4.1 |
|
Refractive
Index: |
1.76
- 1.78 |
Corundum
data |
Chemical
Composition: |
Al2O3,
Aluminum Oxide |
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Crystal
Structure: |
Trigonal |
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