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spinel

DEFINITIONS OF: spinel

1

n a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones

Types:
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ruby spinel, spinel ruby
a spinel used as a gemstone (usually dark red)
Ceylonite, pleonaste
a dark-colored spinel containing iron
almandine
a purple variety of the ruby spinel
balas, balas ruby
a pale rose-colored variety of the ruby spinel
rubicelle
a yellow or orange variety of ruby spinel
Type of:
mineral
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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