chrysoberyl

American  

[kris-uh-ber-uhl] / ˈkrɪs əˌbɛr əl /

noun

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

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chrysoberyl British  

/ ˈkrɪsəˌbɛrɪl /

noun

1. 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

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Etymology

Origin of chrysoberyl

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

Example Sentences

The analysis of a specimen of Brazilian chrysoberyl gave alumina 78.10, beryllia 17.94, and ferric oxide 4.88%.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Ruby and sapphire are scratched by diamond alone, while chrysoberyl, topaz and spinel scratch all the remaining stones, although they do themselves yield to the scratch of ruby and sapphire.

From Scientific American Supplement, No. 1082, September 26, 1896 by Various

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

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The base is of solid gold, and around it are set nine gems or charms, a diamond, ruby, sapphire, chrysoberyl cat's-eye, coral, pearl, hyacinthine garnet, yellow sapphire, and emerald.

From Our Cats and All About Them Their Varieties, Habits, and Management; and for Show, the Standard of Excellence and Beauty; Described and Pictured by Weir, Harrison

The true chrysoberyl cat's-eye also has a somewhat similar fibrous or perhaps tubular structure.

From A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public by Wade, Frank Bertram