$750Median
3Sold (12 mo)
$750Last sale
Freibergite specimens for sale
13 for sale · $350–$9,500 USD
21 in the gallery
Freibergite is a complex silver-bearing sulfosalt mineral that forms as metallic, often prismatic aggregates with a bright to submetallic luster. Its color ranges from dark gray to black, and it frequently occurs in granular to foliated masses that reflect light in streaks across the crystal faces. The mineral commonly associates with other sulfosalts and sulfide minerals, and its crystal habit can include sharp, elongated prisms or etched, irregular grains that reveal a metallic sheen when viewed under reflected light.
- Formula
- (Ag,Cu,Fe)12(Sb,As)4S13
- Rarity
- Common
- Stability
- Stable
- Collector interest
- High Interest
- Classification notes
- Sulfide mineral; Tetrahedrite group (Cu, Ag, Fe, Sb, As) sulfide complex
Key characteristics
- Crystal system
- isometric
- Mohs hardness
- 3–4.5
- Specific gravity
- 4.85–5.4
- Luster
- metallic, submetallic
- Transparency
- opaque
- Color
- gray, black
- Streak
- black, brown, red
- Cleavage
- none
- Fracture
- uneven, subconchoidal
- Crystal habit
- dodecahedral, granular, massive
- Classic / historic
Buy Freibergite specimens
View all 13Where Freibergite is found
Top localities
- Herja Mine15 specimens
- Yaogangxian Mine3 specimens
- Bolivia1 specimen
- Oruro (Department)1 specimen
About Freibergite
Notable localities for Freibergite include several classic ore districts and mine productions in Romania, Bolivia, China, Germany, and the United States. Specimens are prized when they display well-formed crystals embedded in gangue minerals or when they occur as sparkling, lustrous aggregates that showcase the mineral’s reflective surfaces. Collectors value Freibergite for its dense metallic look and the way subtle color variations across crystal faces catch light, as well as for the association with other rare sulfosalts that helps tell a district’s paragenesis.
