gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Quartz/Schist
Hardness: 7.5-8 for emerald, 7 for quartz; Color: Green bands in a white/grey matrix; Luster: Vitreous; Crystal system: Hexagonal; Specific gravity: 2.63-2.91
- Hardness
- 7
- Color
- Green bands in a white/grey matrix
- Luster
- Vitreous
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Physical properties
Hardness: 7.5-8 for emerald, 7 for quartz; Color: Green bands in a white/grey matrix; Luster: Vitreous; Crystal system: Hexagonal; Specific gravity: 2.63-2.91
Formation & geological history
Formed in pegmatites or metamorphic rocks where hydrothermal fluids rich in beryllium interact with chromium or vanadium-bearing host rocks.
Uses & applications
Ornamental display, jewelry (when faceted), and collectors' specimens for geology enthusiasts.
Geological facts
Emeralds are green beryls; the green color is caused by trace amounts of chromium and sometimes vanadium. Specimens with clear crystal structure in matrix are highly prized.
Field identification & locations
Identify by looking for green hexagonal crystal structures within a lighter host rock. Commonly found in Brazil, Colombia, and Zambia.
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