chrysoberyl

A cut gem of chrysoberyl

From Latin chrysoberyllus, from Ancient Greek χρῡσοβήρυλλος (khrūsobḗrullos, “gold beryl”), from χρυσός (khrusós, “gold”) after its color, and βήρυλλος (bḗrullos, “beryl”).

• (UK) IPA^(key): /ˈkɹɪs.ə(ʊ)ˌbɛɹ.ɪl/
• (US) IPA^(key): /ˈkɹɪs.əˌbɛɹ.əl/

chrysoberyl (countable and uncountable, plural chrysoberyls)

1. (mineralogy) A vitreous mineral, often pale green, a mixed oxide of aluminium and beryllium with the chemical formula BeAl₂O₄, used as a gemstone.
   • 2012 March, Lee A. Groat, “Gemstones”, in American Scientist‎, volume 100, number 2, archived from the original on 14 June 2012, page 128:

     Although there are dozens of different types of gems, among the best known and most important are diamond, ruby and sapphire, emerald and other gem forms of the mineral beryl, chrysoberyl, tanzanite, tsavorite, topaz and jade.

• David Barthelmy (1997–2024) “Chrysoberyl”, in Webmineral Mineralogy Database.
• “chrysoberyl”, in Mindat.org‎, Hudson Institute of Mineralogy, 2000–2024.
• James D. Dana: Dana's System of Mineralogy. Volume I, seventh edition, revised by Charles Palache, Harry Berman, and Clifford Frondel. John Wiley & Sons, 1944