DIOPTASE

Noun

dioptase (countable and uncountable, plural dioptases)

An intense emerald-green to bluish-green copper cyclosilicate mineral.

Source: Wiktionary


Di*op"tase, n. Etym: [Gr. dioptase.] (Min.)

Definition: A hydrous silicate of copper, occurring in emerald-green crystals.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

14 June 2025

FELLOW

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