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beryl
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    Also found in: Encyclopedia, Wikipedia 0.03 sec.

beryl

Mineral that forms crystals chiefly in granite. It is the chief ore of beryllium. Two of its gem forms are aquamarine (light-blue crystals) and emerald (dark-green crystals).

Well-formed crystals of up to 200 tons have been found.
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Gem varieties of beryl include emerald (green), aquamarine (blue), red beryl, goshenite (colourless), heliodor (yellow), and morganite (pink or peach).
Emerald and aquamarine mineralization in Canada by Neufeld, Heather L.D. / Geoscience Canada
Ordinary beryl is colourless but the presence of various trace impurities gives the gemstone varieties of this mineral their distinctive colours: green emerald, blue to bluish-green aquamarine, pink morganite, red bixbite, and yellow to yellowish-orange heliodor (Sinkankas, 1981, p.
Archaeological geology of the world's first emerald mine by Harell, James A. / Geoscience Canada
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