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: | 30,5 x 6,1 x 5,6 & 16,7 x 8,5 x 8,0 mm | 重量: | | 透明: | | 数量: | | 産地: | Ratnapura, Province of Sabaragamuwa, スリランカ (Sri Lanka) | Two doubly terminated Sapphire crystals with distinctive crystal shape. The typical bipyramidal specimen shows a blue color concentration at one point. The other crystal discloses a great transparency, beautiful luster and a very interesting tapering, terrace-shaped termination at both ends.
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