Tourmaline

Tourmaline specimens for sale

1,518 for sale · $6–$570,000 USD

5,720 in the gallery

Tourmaline is a complex silicate mineral that forms in a wide range of colors, from deep greens and pinks to blues and black. It often occurs as elongated, columnar crystals with a vitreous to subhedral luster, sometimes showing dichroism where colors shift in different lighting. The mineral commonly crystallizes in borosilicate-bearing environments, and its robust crystal habit makes it a favorite for polished stones as well as natural specimens.

Formula
AD3G6 (T6O18)(BO3)3X3Z
Rarity
Common
Stability
Stable
Collector interest
Moderate Interest
Classification notes
Silicate mineral; cyclosilicate; Tourmaline group (9/C).

Key characteristics

Crystal system
trigonal
Mohs hardness
7–7.5
Specific gravity
3–3.3
Luster
vitreous, resinous
Transparency
transparent, translucent, opaque
Color
colorless, white, gray, black, brown, red, orange, yellow, green, blue, violet, pink
Streak
white
Cleavage
indistinct
Fracture
uneven, subconchoidal
Crystal habit
prismatic, acicular, radiating, granular, massive
  • Gem mineral
  • Classic / historic

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Where Tourmaline is found

Top localities

  1. Himalaya Mine239 specimens
  2. Cruzeiro mine123 specimens
  3. Paprok95 specimens
  4. Jonas Mine91 specimens
  5. Pederneira mine91 specimens
  6. Sosedka pegmatite vein74 specimens
  7. Pakistan62 specimens
  8. Afghanistan47 specimens
  9. Rubaya45 specimens
  10. Minas Gerais39 specimens

About Tourmaline

Notable specimens come from Brazil and the United States, with other important localities including Afghanistan, Pakistan, and Russia. Brazilian tourmalines are especially prized for intense pink to red varieties known as rubellites and for watermelon tourmalines that display layered color zoning. Collectors value well-formed, well-striated crystals and specimens with pleasing termination faces, color zoning, and clean matrix. The wide color spectrum and the potential for gem-quality material contribute to its enduring appeal among mineral collectors and lapidary enthusiasts alike.