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: | Central Province (Hakurutale and Munwatte), Sri Lanka (Sri Lanka) | Well sized sapphire crystal with blue to colorless hues. The crystal shows mainly gemmy parts and undamaged terminated flat ends. The surface displays beside some natural grown marks luster and striation. Fine reference specimen with a weight of 19 carat!
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