mineral

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces

Hardness: 7.5–8.0 Mohs; Color: Medium to dark green; Luster: Vitreous; Crystal structure: Hexagonal; Cleavage: Poor/Indistinct; Specific Gravity: 2.67–2.78.

Hardness: 7
Color: Medium to dark green
Luster: Vitreous

Identified March 13, 2026More mineral →

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Physical properties

Hardness: 7.5–8.0 Mohs; Color: Medium to dark green; Luster: Vitreous; Crystal structure: Hexagonal; Cleavage: Poor/Indistinct; Specific Gravity: 2.67–2.78.

Formation & geological history

Formed in metamorphic or hydrothermal environments where beryllium and chromium/vanadium meet. Often found in mica schists or calcite veins. Geological age varies by deposit (Colombian deposits are roughly 35-65 million years old).

Uses & applications

Primarily used as a gemstone in high-end jewelry; low-quality specimens are used for mineral collecting or as a minor source of beryllium for aerospace alloys.

Geological facts

By weight, Emerald is one of the most valuable gemstones in the world. Unlike other beryls like aquamarine, emeralds are expected to have inclusions, often called 'jardin' (French for garden).

Field identification & locations

Identify by its rich green color and hexagonal crystal habit. Found in Colombia, Brazil, Zambia, and Ethiopia. Collectors should look for saturated color and clarity in the field.

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