標 本 名: | 菫青石／コーディエライト(アイオライト）(Iolite)
| 化学組成: | Mg2Al4Si5O18 | 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) | Well this is a true rarity a prismatic iolite crystal from Sri Lanka. Such gem quality cordierite crystals are extremely rare. The crystals shows pseudo-hexagonal shape sadly no terminations but therefore intact striated prism faces. Such crystal is very hard to find!
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