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, Sabaragamuwa Province, スリランカ (Sri Lanka) | This is a partly gemmy doubly terminated sapphire crystal from Sri Lanka. The middle of the crystal is hosting some inclusions the both lateral parts are gemmy with blue color zoning.
The surface is displaing good luster and crystal striation.
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