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SAPPHIRE MINERAL
NATURAL COLOR
Hardness
9 |
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Chemical properties:
corundum is composed of pure
alumina; its colouring is due to metallic | oxide traces or inclusions. The color of sapphire, due to iron and titanium oxide, gives its best | effect under daylight. Electric light makes it often dark. | Gems are generally found in alluvium, but come either from basaltic
slags, or from metamorphic
marble. | |
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55.63
cts.
blue Sapphire crystal single
25.5 x 21 mm. ORIGIN:
Andranondambo Madagascar
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USD 295.00
ref: SACR5563c
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