grossular

grossularite

[gros-yuh-luh-rahyt]
noun
a mineral, calcium aluminum garnet, Ca 3 Al 2 Si 3 O 12 , occurring in gray-white to pinkish crystals.
Also, grossular [gros-yuh-ler] .
Also called gooseberry garnet.


Origin:
1840–50; < Neo-Latin grossulār(ia) gooseberry (irregular < French groseille) + -ite1

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World English Dictionary
grossularite (ˈɡrɒsjʊləˌraɪt)
 
n
Also called: gooseberry stone a green or greenish-grey garnet, used as a gemstone. Formula: Ca3Al2(SiO4)3
 
[C19: from New Latin grossulāria gooseberry, from Old French grosele + -ite1]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

grossular

a calcium aluminum garnet that sometimes resembles the gooseberry fruit. It can be colourless (when pure), white, yellow, brown, red, or green. Massive greenish grossular, though only superficially resembling jade, is sometimes marketed under the name South African, or Transvaal, jade in an attempt to increase its selling price. Nearly all grossular used for faceted gems is orange to reddish brown. The reddish brown material is called cinnamon stone, or hessonite. Grossular typically exhibits internal swirls, which help to distinguish it from spessartine, which is clear. It is ordinarily found in metamorphic rocks. See also garnet.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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