mineral

Emerald with Matrix (Emerald in Mica Schist)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Hardness: 7.5 to 8.0 on Mohs scale. Color: Deep green with dark black/grey inclusions. Luster: Vitreous to greasy. Crystal structure: Hexagonal. Specific gravity: 2.67 to 2.78.

Hardness: 7
Color: Deep green with dark black/grey inclusions
Luster: Vitreous to greasy

Identified May 14, 2026More mineral →

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Physical properties

Hardness: 7.5 to 8.0 on Mohs scale. Color: Deep green with dark black/grey inclusions. Luster: Vitreous to greasy. Crystal structure: Hexagonal. Specific gravity: 2.67 to 2.78.

Formation & geological history

Formed in hydrothermal veins or pegmatites when beryllium-rich fluids interact with chromium or vanadium-rich rocks. Often found in metamorphic schist or marble environments.

Uses & applications

Used primarily in jewelry as a gemstone and highly valued by mineral collectors for specimen displays.

Geological facts

Emerald is one of the four recognized precious gemstones. The dark inclusions in this specimen are likely biotite mica or carbonaceous shale, which are common in Colombian and Brazilian deposits.

Field identification & locations

Identify by its distinct green color and hexagonal habits. In the field, look for 'green fire' crystals embedded in host rock such as schist or quartz. Common locations include Colombia, Brazil, Zambia, and Russia.

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