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: | Gem gravels around Ratnapura, Ratnapura District, Sabaragamuwa Province , スリランカ (Sri Lanka) | Here you get an interesting untreated star sapphire from Sri Lanka disclosing a great sharp 6-ray star. The star is caused by very fine rutile needles while the dominant black rod-like crystals most probably are rutile as well. Very interesting and charming piece! 
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