Danburite

Danburite specimens for sale

18 for sale · $100–$3,500 USD

44 in the gallery

Danburite is a calcium borosilicate mineral that crystallizes in the monoclinic system, typically forming prismatic to tabular crystals with a vitreous to resinous luster. It often presents as colorless or pale pink to yellowish, sometimes with a slight brown tint, and commonly occurs as aggregates or stout crystals embedded in igneous rocks or as inclusions within associated minerals. The mineral’s lustre and clarity make individual crystals desirable for display, while its relatively straightforward cleavage and hardness give it a satisfying tactile quality for collectors.

Formula
CaB2Si2O8
Rarity
Uncommon
Stability
Stable
Collector interest
Very High Interest
Classification notes
Borosilicate tectosilicate, danburite group

Key characteristics

Crystal system
orthorhombic
Mohs hardness
7–7.5
Specific gravity
2.97–3.03
Luster
vitreous
Transparency
transparent, translucent
Color
colorless, white, gray, yellow, brown, pink
Streak
white
Cleavage
poor
Fracture
conchoidal, uneven
Crystal habit
prismatic, tabular, granular, massive
  • Gem mineral
  • Fluorescent: blue
  • Classic / historic

Buy Danburite specimens

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Where Danburite is found

Top localities

  1. Charcas26 specimens
  2. Sosedka pegmatite vein3 specimens
  3. Alto Chapare mining district1 specimen
  4. Bor Pit1 specimen
  5. Imalo1 specimen
  6. St. Lawrence County1 specimen
  7. Toroku Mine1 specimen
  8. Mogok Valley1 specimen
  9. San Bartolo mine, Charcas1 specimen

About Danburite

Notable specimens have been recovered from diverse sources, including Mexico, Russia, Myanmar, the United States, and Madagascar. These localities yield well-formed crystals that can be sizable, sometimes exhibiting wine-red to pink coloration that adds visual intrigue to a collection. Collectors value danburite for its clean crystal habits and the way light travels through transparent to translucent forms, producing a bright, glassy appearance under proper illumination. While not among the most abundant minerals, well-formed danburite crystals from classic locales remain sought after for their clarity and geometric precision.