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宝石辞典
Name of mineral : Corundum
Mohs hardness : 9
Refractive index : 1.762~1.770
Specific gravity : 4.00


Yellow Sapphire
Weight : 1.54 ct
Size (mm) : L 7.5×W 5.9×D 3.84
Sri Lanka, Untreated
Gem Quality

Violet Sapphire
Weight : 1.52 ct
Size (mm) : L 7.5×W 5.7×D 3.88
Tanzania, Untreated
Gem Quality

Orange Sapphire
Weight : 0.81 ct
Size (mm) : L 5.9×W 5.0×D 3.11
Sri Lanka, Untreated
Gem Quality

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