標 本 名: | コランダム (鋼玉), サファイア (Corundum, Variety: Sapphire)
| 化学組成: | Al2O3 | サ イ ズ: | 13,6 x 2,6 x 2,4 - 8,0 x 3,0 x 2,6 mm | 重量: | | 透明: | | 数量 : | | 産地: | Mogok Stone Tract, Mandalay Division, ビルマ(ミャンマー) Burma (Myanmar) | Three sapphire crystals, two are doubly terminated, the one single pyramidal shaped piece has on crystalline fracture face apart from this its a perfect gemmy crystal with fine blue coloration and a strange tapering on the top. The other gemmy blue colored sapphire is doubly terminated with perfect luster and transparency. The short shaped piece is looking more shaped like a barrel but also double terminated. Fine collection for unusual Burmese sapphire
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