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) | A well sized colorless Sapphire twin crystal from Sri Lanka. The other part shows a slightly Geuda appearance. Those terminations are fully intact only a small spot in the middle shows a fracture plane, where the crystal was connected to the matrix. The crystal shows a mostly a good transparency, good luster and a very sharp defined crystal striations. Exceptional piece with attractive habit.
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