標 本 名: | コランダム (鋼玉), サファイア / スピネル (Corundum, Variety Sapphire / Spinel)
| 化学組成: | Al2O3 / MgAl2O4 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Mogok Stone Tract, Mandalay Division, ビルマ(ミャンマー) Burma (Myanmar) | Sapphire with hexagonal growth pattern and star effect, covered by a spinel layer- The piece shows apart from the top a fully natural shape with natural grown facets only the top ha sheen polished. Great combination of a paragenesis with asterism!
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