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, Sri Lanka | This is a lustrous sapphire crystal from Sri Lanka, with partly very transparent areas. The crystal disclosing at one flat end two natural grown holes, while the other flat end shows irregular faces with a tiny damage. Nevertheless you get a big sapphire crystal with a weight of 26 carat!
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