標 本 名: | コランダム (鋼玉), ルビー & サファイア (Corundum, Variety: Ruby & Sapphire)
| 化学組成: | Al2O3 | サ イ ズ: | 7,0 x 6,44 x 1,2 - 5,5 x 5,3 x 3,8 mm | 重量: | | 透明: | | 数量 : | | 産地: | Mogok Stone Tract, Mandalay Division, ビルマ(ミャンマー) Burma (Myanmar) | Here you get three corundum crystals all are doubly terminated none is damaged. The flat crystals shows strong ruby color with trigonal marks on both sides, the other light pink ruby crystal shows perfect clarity and fine luster as well. Last but not least you get a color change ruby crystal with a greenish hue under normal daylight and distinctive pinkish colorations under incandescent light, strong color change. Three rare gemmy pieces from Burma!
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