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: | 19,9 x 9,0 x 5,5 - 7,5 x 5,5 x4,1 mm | 重量: | | 透明: | | 数量: | | 産地: | Ratnapura, Province of Sabaragamuwa, スリランカ (Sri Lanka) | Three undamaged sapphire crystals all disclosing more or less good preserved crystal shapes. One small piece disclosing pinkish body with blue tips. The bigger colorless crystal is multiple twinned and shows at one end a trapiche pattern. Interesting three pieces from Sri Lanka
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