NaBePO₄

These samples of beryllonite are displayed in the Smithsonian Museum of Natural History. Beryllonite is a phosphate mineral of beryllium with the composition NaBePO₄. The sample at left is about 20x5 cm across and is from Poprok, Kunar, Nuristan, Afghanistan. The gem is to the same scale and is 5 carats.

This sample of beryllonite is from Lavra da Ilha pegmatite, Itinga, Minas Gerais, Brazil. It is about 5x2.5 cm.