標 本 名: | コランダム (鋼玉), トラピチェ・サファイア (Trapiche Sapphire)
| 化学組成: | Al2O3 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Mines around Kahawatta, Ratnapura District, Sabaragamuwa Province, スリランカ (Sri Lanka) | This is a pretty rare trapiche sapphire from Sri Lanka. The crystal shows the trapiche pattern like carved into the surface. Both sides are totally natural grown there is no polish or enhancement. The backside shows mostly crystal striation. Very fine and rare reference specimen
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