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Beryl

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Beryl

(Science: chemical) a mineral of great hardness, and, when transparent, of much beauty. It occurs in hexagonal prisms, commonly of a green or bluish green colour, but also yellow, pink, and white. It is a silicate of aluminium and glucinum (beryllium). The aquamarine is a transparent, sea-green variety used as a gem. The emerald is another variety highly prized in jewelry, and distinguished by its deep colour, which is probably due to the presence of a little oxide of chromium.

Origin: f. Beryl, OF. Beril, L. Beryllus, gr, prob. Fr. Skr. Vaidrya. Cf. Brilliant.