EUCLASE - LaMarina Mine, Colombia

Euclase is related to beryl (beryllium aluminum hydroxide silicate) and is found in slender and prismatic crystals which are a product of decomposition of beryl in pegmatite, an igneous rock formed underground. Euclase crystals can be light blue in color and have a hardness of 7.5 on the Mohs hardness scale. The best Euclase crystals most commonly occur in Ouro Preto, Brazil, with topaz and in Colombia with emerald, which is also a beryl mineral.

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