mineral

Emerald in Matrix (Quartz/Schist)

Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities

Hardness: 7.5 - 8.0 on Mohs scale; Color: Intense green (emerald) with white/gray quartz or biotite schist streaks; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Specific Gravity: 2.67-2.78

Hardness: 7
Luster: Vitreous to waxy

Identified March 24, 2026More mineral →

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Physical properties

Formation & geological history

Formed in hydrothermal veins or at the contact of pegmatites with metamorphic schists. The combination of Beryllium from igneous magma and Chromium from host metamorphic rock creates the green color during tectonic mountain-building events.

Uses & applications

Primary use is in high-end and artisanal jewelry (cabochons or faceted stones); also highly valued by mineral collectors as matrix specimens.

Geological facts

Unlike 'clear' emeralds, matrix emeralds show the natural geological story of the gem's birth. The green color is specifically caused by trace amounts of chromium and sometimes vanadium within the silicate structure.

Field identification & locations

Identify in the field by the hexagonal crystal habit and distinctive 'emerald green' color against a lighter host rock like quartz or dark mica schist. Common locations include Brazil, Colombia, Zambia, and Russia.

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