標 本 名: | コランダム (鋼玉), ルビー / 方解石 (Corundum, Variety Ruby / Calcite)
| 化学組成: | Al2O3 / CaCO3 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Dattaw Mine, north of Mogok, ビルマ(ミャンマー) Burma (Myanmar) | You get a big lustrous ruby crystal in calcite matrix. The crystal is only damage on the base. All other sides disclosing fine crystal faces. On the surface you can striation and growth marks, a quite big ruby specimen with less calcite then ruby.
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