opaque gem

Definitions of opaque gem

n a gemstone that is opaque

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a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
cat's eye
any of various gems (as chrysoberyl or chalcedony) that reflect light when cut in a rounded shape
coral, precious coral, red coral
the hard stony skeleton of a Mediterranean coral that has a delicate red or pink color and is used for jewelry
jade, jadestone
a semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite
an opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone
lapis lazuli, lazuli
an azure blue semiprecious stone
a blue to grey green mineral consisting of copper aluminum phosphate
a green variety of chrysoberyl used as a gemstone
black opal
a dark colored opal with internal reflections of green or red
fire opal, girasol
an opal with flaming orange and yellow and red colors
harlequin opal
a reddish opal with small patches of brilliant color
Type of:
gem, gemstone, stone
a crystalline rock that can be cut and polished for jewelry

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