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| RUBY MINERAL
NATURAL COLOR
Hardness
9 |
 |
| C
corundum is composed of pure
alumina; its colouring is due to metallic | | oxide traces or inclusions. The color of
ruby is due to chromium oxide. | | Gems are generally found in alluvium, but come either from basaltic
slags, or from metamorphic
marble. | | |
 |
| 17.25
cts.
White-pinkish tabular Sapphire crystal single
(white triangle on one
face ) (translucent) Damaged at a border
19.3 x 16.9 x
4.4 mm. ORIGIN: Madagascar
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USD 49.00
ref: WSAPbr1725c
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