- 1. n. A hydrous silicate of copper, occurring in emerald-green crystals. Source: opted
- 2. A hydrous silicate of copper, occurring in emerald-green crystals. Source: webster
- 3. A hydrous silicate of copper, occurring in emerald-greencrystals. Source: adambom
- 4. n. A hydrous silicate of copper, occurring in emerald-green crystals. Source: ecdict
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dioptase
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