BERYL GemShoppy March 16, 2015 Gemstones Beryl is Beryllium aluminium silicate, frequently with some sodium, lithium and caesium. The chemistry is Be3Al2Si60qi. The hardness is between 7-1/2 and 8 and the streak is white. Although what we’re talking about here is the beautiful Golden Beryl, remember that Emerald and Aquamarine are also Beryls. Golden Beryl ranges in colour from almost canary to gold, in the best examples. Other stones are a dull yellow, sometimes with a hint of green. Beryl develops in pegmatites and certain metamorphic rocks. It occurs with quartz, microcline, and muscovite in pegmatites, and with quartz, muscovite, and almandine in schist of regional metamorphic rocks. Beryl has been mined commercially from pegmatites in the New England states. In addition fine specimens have come from California & North Carolina. Gem quality Golden Beryl is mined in Brazil, Virginia & Madagascar. The Greeks knew it as bêrullos, deriving from Sanskrit vaidurya meaning “crystal”. To Hindus it is a symbol of purity, and is offered as a wedding gift. . Abbreviated to brill, the word gave birth to Italian brillare (“shine”) then French briller (brilliance passed into English).