gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Hardness: 7.5-8.0 Mohs; Color: Deep green crystals in a dark schist or quartz matrix; Luster: Vitreous to greasy; Crystal Structure: Hexagonal crystals; Cleavage: Poor/Indistinct.
- Hardness
- 7
- Color
- Deep green crystals in a dark schist or quartz matrix
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7.5-8.0 Mohs; Color: Deep green crystals in a dark schist or quartz matrix; Luster: Vitreous to greasy; Crystal Structure: Hexagonal crystals; Cleavage: Poor/Indistinct.
Formation & geological history
Formed in metamorphic or hydrothermal environments where beryllium-bearing fluids interact with chromium-rich host rocks, often in schist or pegmatite veins under high heat and pressure.
Uses & applications
Used primarily in jewelry as a precious gemstone; specimen collecting for raw mineral enthusiasts.
Geological facts
Emeralds are one of the 'Big Three' precious gemstones alongside rubies and sapphires. Finding green beryl in its host matrix is highly desired by mineral collectors to show the natural growth environment.
Field identification & locations
Identify by the distinct hexagonal prism shape of the green crystals and their high hardness. Commonly found in Colombia, Brazil, and parts of Russia or Zambia.
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