Emerald
/ˈɛmrəld/
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Definition
(noun) Any of various green gemstones, especially a green transparent form of beryl, highly valued as a precious stone.
Sentence Examples
Rare gems include aquamarine, amethyst, emerald, quartz and ruby.
Tom does not know the difference between a diamond and an emerald.
CEFR Practice Quiz
She wore a stunning necklace with a large green ____ stone.