mineral

Fuchsite

Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2

Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8 - 2.9

Hardness: 2-2
Color: Emerald green to light green
Luster: Vitreous to pearly

Identified April 10, 2026More mineral →

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Physical properties

Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8 - 2.9

Formation & geological history

Formed through regional metamorphism in phyllites and schists, particularly those with low silica content and high chromium. It is a common accessory mineral in metamorphic rocks across various geological ages.

Uses & applications

Used primarily as decorative stone, in lapidary work (cabling/beads), as a pigment, and as a popular mineral specimen for collectors and metaphysical users.

Geological facts

The vibrant green color of Fuchsite is caused by the presence of chromium, the same element that gives emeralds their green hue. It is named after the German mineralogist Johann Nepomuk von Fuchs.

Field identification & locations

Identify by its mica-like flakey/platy structure and distinct bright green color. Often found with Ruby (Ruby in Fuchsite) or in quartzite. Common locations include Brazil, India, Russia, and the USA.

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