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宝石辞典

ラピス・ラズリ (無処理)


Name of mineral :
A rock composed primarily of Lazurite, calcite, and pyrite.
Mohs hardness : 5~6
Refractive index : 1.50~1.67
Specific Gravity : 2.75


Untreated
Gem Quality
Size(mm): Diameter 20.2 x H 1.36
Weight: 1.26 grams
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