chrysoberyl

[ kris-uh-ber-uhl ]

Phonetic (Standard)IPA

noun

a mineral, beryllium aluminate, BeAl 2 O 4 , occurring in green or yellow crystals, sometimes used as a gem.

chrysoberyl

/ ˈkrɪsəˌbɛrɪl /

a rare very hard greenish-yellow mineral consisting of beryllium aluminate in orthorhombic crystalline form and occurring in coarse granite: used as a gemstone in the form of cat's eye and alexandrite. Formula: BeAl 2 O 4

1350–1400; Middle English < Latin chrȳsoberyllus < Greek chrȳsobḗryllos, equivalent to chrȳso- chryso- + bḗryllos beryl

Some other minerals in which it occurs are phenakite, euclase, and chrysoberyl.

Chrysoberyl is known as a constituent of certain kinds of granite, pegmatite and gneiss.

Then follows the topaz, which, with spinel and chrysoberyl, has a hardness of 8; whilst quartz falls a degree lower.

Now and then she sipped of the wine, Lacrymae Christi from Viterbo, of the greenish straw color of the chrysoberyl.

Cymophane, or chatoyant chrysoberyl, may also be asteriated.

April 18, 2024petrichor

[pet-ri-kawr]

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