
mineral
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Hardness: 7.5-8.0 on Mohs scale; Color: Intense green to bluish-green; Luster: Vitreous to resinous; Crystal system: Hexagonal; Cleavage: Poor/Indistinct; Specific gravity: 2.72-2.78
- Hardness
- 7
- Color
- Intense green to bluish-green
- Luster
- Vitreous to resinous
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Physical properties
Hardness: 7.5-8.0 on Mohs scale; Color: Intense green to bluish-green; Luster: Vitreous to resinous; Crystal system: Hexagonal; Cleavage: Poor/Indistinct; Specific gravity: 2.72-2.78
Formation & geological history
Forms in pegmatites, hydrothermal veins, and metamorphic rocks. Most high-quality specimens are found in shale-hosted hydrothermal deposits (like Colombia) or mica schists.
Uses & applications
Primarily used as a precious gemstone in jewelry (earrings, rings, necklaces) and as a high-value mineral specimen for collectors.
Geological facts
Emerald is one of the four traditional 'precious' stones. The presence of tiny inclusions, often called 'jardin' (French for garden), is common and often used to verify authenticity and origin.
Field identification & locations
Identify in the field by its characteristic hexagonal crystal habit, hardness, and distinct green color. Common locations include Colombia, Brazil, Zambia, and Ethiopia.
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