BeAlSiO₄(OH)

These samples of euclase are displayed in the Smithsonian Museum of Natural History. Euclase is a silicate mineral which contains beryllium with the composition BeAlSiO₄(OH). The sample at left is about 5 cm across and is from Karoi, Hurungwe, Zimbabwe.

These euclase specimens are from Minas Gerais, Brazil. The left sample is about 8 cm across. They are shown at the same scale.

These euclase samples are from Minas Gerais, Brazil. The largest is about 3 cm across.

These euclase specimens are from Minas Gerais, Brazil. The left sample is on the order of a cm in diameter. The gems are 18.3 and 8.9 carats. They are shown at the same scale.