ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  opaque gem - a gemstone that is opaque chrysoberyl - a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone opal - a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones gemstone, gem, stone - a crystalline rock that can be cut and polished for jewelry; "he had the gem set in a ring for his wife"; "she had jewels made of all the rarest stones" cat's eye - any of various gems (as chrysoberyl or chalcedony) that reflect light when cut in a rounded shape precious coral, red coral, 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 jasper - 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 turquoise - a blue to grey green mineral consisting of copper aluminum phosphate; "blue turquoise is valued as a gemstone" |
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