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: | 92,7 x 49,8 x 53,4
クリスタル: 32,0 x 8,8 mm | 重量: | | 透明: | | 数量: | | 産地: | Mines around Kahawatta, Ratnapura District, Sabaragamuwa Province, スリランカ (Sri Lanka) | From a 30 year old collection you get at least 4 sapphire crystals in a nepheline mica matrix. Very hard to see any sapphire from Sri Lanka in matrix here you get a chance to get a descend blue colored corundum in its mother rock!
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