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: | | 重量: | | 透明: | | 数量: | | 産地: | Ratnapura, Province of Sabaragamuwa, スリランカ (Sri Lanka) | Well this sapphire is actually a beautiful twin; although it looks only bent you can see the two totally parallel intergrown bipyramidal crystals. There are no damages whatsoever. Although transparency isn’t good, you get an absolutely lovely unusual corundum crystal !
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