mineral
Emerald
Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities
AI-generated identification · may be incorrectHardness: 7.5-8.0 Mohs, Color: Deep green, Luster: Vitreous, Crystal Structure: Hexagonal, Cleavage: Indistinct, Specific Gravity: 2.67-2.78
- Hardness
- 7
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Physical properties
Hardness: 7.5-8.0 Mohs, Color: Deep green, Luster: Vitreous, Crystal Structure: Hexagonal, Cleavage: Indistinct, Specific Gravity: 2.67-2.78
Formation & geological history
Formed in hydrothermal veins or pegmatites where beryllium-rich fluids interact with chromium or vanadium-bearing rocks; often metamorphic in origin.
Uses & applications
Primarily used as a gemstone in high-end jewelry and as a valuable collector's mineral.
Geological facts
Emeralds are often known for their 'jardin' (garden), which refers to the natural inclusions within the stone. Rare clean specimens can be more valuable than diamonds.
Field identification & locations
Check for a deep green hue and characteristic hexagonal crystal shape. Common locations include Colombia, Brazil, and Zambia. Often contains surface-reaching fissures.
