Braunite specimens for sale

17 for sale · $250–$4,500 USD

14 in the gallery

Braunite is a manganese silicate mineral that forms in monoclinic crystals and compact, metallic-luster masses. It typically presents a brown to dark brown color, with a metallic to sub-metallic shine and prismatic, elongated crystal habits that can create striking, blocky aggregates. Crystals and masses often occur intergrown with other manganese oxides or silicates, sometimes displaying a characteristic glassy to sub-vitreous surface and a satin-like luster when weathered.

Formula
Mn2+Mn3+6SiO12
Rarity
Common
Stability
Stable
Collector interest
Moderate Interest
Classification notes
Nesosilicate, braunite group

Key characteristics

Crystal system
tetragonal
Mohs hardness
6–6.5
Specific gravity
4.7–4.83
Luster
submetallic, dull
Transparency
opaque
Color
black, gray, brown
Streak
black, brown
Cleavage
perfect
Fracture
uneven
Crystal habit
pyramidal, prismatic, granular, massive

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Where Braunite is found

Top localities

  1. N'Chwaning Mines1 specimen
  2. Wessels Mine1 specimen

About Braunite

Notable localities include classic South African and Indian occurrences, where braunite can form in hydrothermal veins and contact metamorphic zones, as well as European deposits in Germany and Italy that yield dense, coarse-grained specimens. Specimens from Sweden and other producing regions contribute to the mineral’s appeal for collectors seeking larger, well-formed aggregates or complex intergrowths with other manganese minerals. The mineral is sought for its rich color, crisp crystal forms, and the textural interest of layered, platy or needle-like clusters.

Collectors value braunite for its distinctive metallic sheen, robust habit, and the way it preserves a strong, earthy luster under display lighting. When well-crystallized, braunite can make compelling centerpiece pieces within a collection, pairing well with other manganese silicates and contrasting minerals to highlight its warm brown tones and structural geometry.