標 本 名: | 緑柱石 , アクアマリン (Aquamarine)
| 化学組成: | Be3Al2Si6O18 | サ イ ズ: | | 重量: | | 透明: | | 数量: | | 産地: | Shigar Valley, Skardu District, Baltistan, Northern Areas, パキスタン (Pakistan) | Here you get an aquamarine skeleton crystal, both sides show mainly fully intact spear-like terminated crystals. The overall shape and the hollow areas seem to be caused by post- or epigenetic hydrothermal (“etching”) environment. The crystal shows mainly a light blue coloration but at one area the color is more intense and reaches a medium blue. Some parts shop fine luster as well. Bizarre beryl crystal from Pakistan
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