mineral

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium and Vanadium impurities)

AI-generated identification · may be incorrect

Hardness: 7.5-8.0 on Mohs scale; Color: Green to bluish-green; Luster: Vitreous to sub-vitreous; Crystal Structure: Hexagonal; Specific Gravity: 2.67-2.78; Cleavage: Poor/Imperfection

Hardness: 7
Color: Green to bluish-green
Luster: Vitreous to sub-vitreous

Identified July 12, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 on Mohs scale; Color: Green to bluish-green; Luster: Vitreous to sub-vitreous; Crystal Structure: Hexagonal; Specific Gravity: 2.67-2.78; Cleavage: Poor/Imperfection

Formation & geological history

Formed in metamorphic or hydrothermal environments where beryllium comes into contact with chromium or vanadium. Often found in schist or pegmatite veins. Some of the world's most famous deposits are hundreds of millions of years old.

Uses & applications

Primary use is in high-end jewelry as a precious gemstone. Lower-grade specimens are highly sought after by mineral collectors for their crystal habits.

Geological facts

Emerald is one of the four recognized 'precious' gemstones. Most natural emeralds contain inclusions and surface-reaching fissures, often referred to as 'jardin' (French for garden) due to their mossy appearance.

Field identification & locations

Identify by its distinctive deep green color and hexagonal prismatic growth if crystals are intact. Commonly found in Colombia, Brazil, and Zambia. Collectors should look for color saturation and transparency.