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RUBY MINERAL
NATURAL
COLOR
Hardness
9 |
|
|
Ruby, natural
tabular crystal 30
grms. / 36.3 x 29.5 mm
( Deep red ) |
USD
205.00
ref RUmit30g
|
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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