Muscovite specimens for sale

212 for sale · $20–$55,000 USD

866 in the gallery

Muscovite is a phyllosilicate mineral in the mica group, known for its layered sheet structure and perfect basal cleavage that results in flexible, thin plates. The mineral commonly forms as tabular, prismatic crystals with a vitreous to pearly luster and pale to brownish hues, sometimes exhibiting a glassy sheen on fresh faces. It occurs in a variety of metamorphic and igneous environments, often associated with other micas and feldspars, and is frequently found in schists, pegmatites, and hydrothermal veins.

Formula
KAl2(AlSi3O10)(OH)2
Rarity
Abundant
Stability
Stable
Collector interest
High Interest
Classification notes
Phyllosilicate; Silicate minerals (Mica group)

Key characteristics

Crystal system
monoclinic
Mohs hardness
2–2.5
Specific gravity
2.76–3
Luster
vitreous, pearly, silky
Transparency
transparent, translucent
Color
colorless, white, gray, brown, yellow, green, pink
Streak
white
Cleavage
perfect
Fracture
uneven
Crystal habit
tabular, bladed, prismatic, radiating, granular, massive
  • Classic / historic

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Where Muscovite is found

Top localities

  1. Chumar Bakhoor48 specimens
  2. Yaogangxian Mine43 specimens
  3. Panasqueira Mines38 specimens
  4. Shigar Valley22 specimens
  5. Minas Gerais19 specimens
  6. Nagar District18 specimens
  7. Pingwu beryl mine18 specimens
  8. Skardu District15 specimens
  9. Pakistan11 specimens
  10. Mount Little Xuebaoding11 specimens

About Muscovite

Notable specimen sources include gemmy, colorless to pale-colored crystals from pegmatites and metamorphic rocks in Pakistan, China, and Brazil, as well as well-crystallized sheets from the United States and Portugal. Collectors prize Muscovite for its attractive sheet habit, the ease of preparation to reveal parallel plates, and the way its cleavage surfaces catch light, producing a shimmering, almost metallic reflection. While often valued for its aesthetic potential in micromounts and cabinet pieces, Muscovite also serves as a window into the mineralogy of mica-bearing assemblages and the high-temperature, low-pressure conditions under which it forms.