mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium impurities
Hardness: 7.5-8.0 on Mohs scale; Color: Green (from chromium/vanadium); Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Specific Gravity: 2.67-2.78.
- Hardness
- 7
- Color
- Green (from chromium/vanadium)
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7.5-8.0 on Mohs scale; Color: Green (from chromium/vanadium); Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Specific Gravity: 2.67-2.78.
Formation & geological history
Formed in pegmatites or hydrothermal veins where beryllium is present in the presence of chromium. Often associated with metamorphic schist or igneous host rocks.
Uses & applications
Primarily used as a gemstone in jewelry. Lower grade specimens like this one are popular for mineral collecting and metaphysical practices.
Geological facts
Emerald is one of the "Big Three" precious gemstones. While clear crystals are most valuable, opaque 'emerald root' or matrix specimens are very common in sites like Brazil and Russia.
Field identification & locations
Identify by its distinctive hexagonal crystal habit and vivid green color. Look for mica or quartz attached to the specimen. Commonly found in Colombia, Brazil, Zambia, and Ethiopia.
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