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.