ruby spinel

noun Mineralogy.

a deep red, transparent variety of spinel, used as a gem.
Also called spinel ruby.

Origin of ruby spinel

First recorded in 1830–40

Words nearby ruby spinel

rubtsovsk, ruby, ruby glass, ruby laser, ruby silver, ruby spinel, ruby-crowned kinglet, ruby-tail wasp, ruby-throated hummingbird, rubáiyát, rubáiyát of omar khayyám, the

British Dictionary definitions for ruby spinel

ruby spinel

noun

a red transparent variety of spinel, used as a gemstone