BERYL VAR AQUAMARINE on QUARTZ, Carnaiba, BRAZIL (LARGE CABINET)

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Beryl is a mineral made up of beryllium aluminum silicate, represented by the chemical formula Be3Al2Si6O18. Notable varieties of beryl include emerald and aquamarine. This mineral can form naturally occurring hexagonal crystals that may reach several meters in length, although well-terminated specimens are uncommon. While pure beryl is colorless, it often exhibits various hues due to impurities, including green, blue, yellow, pink, and the rare red. Beryl serves as an important ore for beryllium. The crystal on this specimen is about 110 mm x 30 mm. Acquired on 1 July 1988. Show more