Boracite specimens for sale

15 for sale · $130–$2,500 USD

73 in the gallery

Boracite is a boron-magnesium borate mineral that forms translucent to white crystals, often prismatic or tabular, with a vitreous to pearly lustre. It commonly occurs in brittle forms and can display subtle zoning or color due to trace elements, though it is predominantly light-colored. Its crystallization typically follows hydrothermal or evaporite conditions, and it is frequently associated with halite, dolomite, and other borates in evaporitic environments. The mineral’s tinctorial simplicity contrasts with its structural complexity, as boron-oxygen borate groups contribute to a robust framework within the crystal lattice.

Formula
Mg3(B7O13)Cl
Rarity
Rare
Stability
Stable
Collector interest
Moderate Interest
Classification notes
Borate (chloroborate); Strunz 6.GA.05

Key characteristics

Crystal system
orthorhombic
Mohs hardness
7–7.5
Specific gravity
2.9–3
Luster
vitreous
Transparency
transparent, translucent
Color
colorless, white, gray, yellow, green, blue, brown
Streak
white
Cleavage
none
Fracture
conchoidal, uneven
Crystal habit
cubic, octahedral, dodecahedral, granular, massive
  • Gem mineral
  • Classic / historic

Buy Boracite specimens

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Where Boracite is found

Top localities

  1. Boulby Mine17 specimens
  2. Alto Chapare mining district8 specimens
  3. Lower Saxony2 specimens
  4. Eime1 specimen
  5. Lüneburg1 specimen
  6. Solno mine1 specimen

About Boracite

Collectors prize boracite for its clean lines and the way the mineral showcases well-formed crystals from classic localities. Notable specimens come from the United Kingdom, Germany, and Poland, where high-quality crystals have been described and matrix associations can enhance display appeal. The rarity of pristine, gemmy crystals in hand-sized specimens adds to its allure for cabinet displays and cabinet-friendly collections. For enthusiasts, boracite represents a window into borate mineralogy and evaporitic genesis, offering both scientific intrigue and aesthetically restrained elegance.