mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Hardness: 7.5-8.0 on Mohs scale. Color: Green hex crystals. Luster: Vitreous to greasy. Crystal System: Hexagonal. Cleavage: Imperfect basal. Specific Gravity: 2.67-2.78.

Hardness: 7
Color: Green hex crystals
Luster: Vitreous to greasy

Identified May 3, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 on Mohs scale. Color: Green hex crystals. Luster: Vitreous to greasy. Crystal System: Hexagonal. Cleavage: Imperfect basal. Specific Gravity: 2.67-2.78.

Formation & geological history

Formed in hydrothermal veins or pegmatites where beryllium-rich fluids interact with chromium-rich host rocks (like schist or limestone) under high pressure and temperature.

Uses & applications

The emerald portion is used in high-end jewelry and as a gemstone. Specimen pieces like this are highly valued by mineral collectors for study and display.

Geological facts

Emeralds are one of the 'Big Four' precious stones. The green color is caused by trace amounts of chromium and sometimes vanadium. Unlike many other gems, inclusions (called 'jardin') are expected and can help prove authenticity.

Field identification & locations

Identify in the field by looking for hexagonal green crystals embedded in dark mica schist or white quartz matrix. Found commonly in Colombia, Brazil, Russia, and Zambia.

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