metamorphic

Fuchsite in Quartz (or Emerald in Fuchsite / Verdite)

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz Matrix

AI-generated identification · may be incorrect

Hardness: 2.5-3 for fuchsite component, up to 7 for quartz-rich parts. Color: Bright emerald green to pale sea-green with silvery mica speckles. Luster: Vitreous to pearly. Crystal Structure: Monoclinic (fuchsite) / Trigonal (quartz). Cleavage: Perfect basal on mica grains. Specific Gravity: ~2.8-3.0.

Hardness: 2
Luster: Vitreous to pearly

Identified July 23, 2026More metamorphic →

Explore Fuchsite in Quartz (or Emerald in Fuchsite / Verdite) in the encyclopedia →

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Physical properties

Formation & geological history

Formed in low- to medium-grade metamorphic rocks, particularly in schists and quartzites enriched with chromium during hydrothermal alteration of ultramafic igneous rocks.

Uses & applications

Popular as a decorative gemstone, tumbled pocket stone, carving material, and ornamental lapidary stone. Highly sought after by mineral collectors and metaphysical enthusiasts.

Geological facts

Fuchsite is a chromium-rich variety of muscovite mica. The vivid green color is directly caused by trace amounts of trivalent chromium replacing aluminum in the crystal lattice.

Field identification & locations

Identified by its distinctive emerald-green color, silvery reflective mica flakes, and variable hardness depending on quartz content. Frequently mined in South Africa, Brazil, India, and Madagascar.