Guide
Proustite specimens for sale
58 for sale · $120–$25,000 USD
110 in the gallery
Proustite is a sulfosalt mineral with the formula Ag3AsS3. It forms dull to bright red to scarlet crystals that typically occur as prismatic, tabular, or acicular aggregates with a metallic to sub-metallic luster. The color is a defining feature, ranging from deep crimson to ruby red, often distinguishing it from related arsenic sulfides. Crystals can be slender and well-formed, sometimes showing opaque to translucent faces that catch the light in mineral luster.
- Formula
- Ag3AsS3
- Rarity
- Rare
- Stability
- Unstable
- Collector interest
- Very High Interest
- Classification notes
- Sulfosalts; Sulfosalts group, Strunz 2.EA
Buy Proustite specimens
View all 58Where Proustite is found
Top localities
- Chañarcillo Mining District20 specimens
- Imiter mine13 specimens
- Niederschlema10 specimens
- Imiter Silver Mine8 specimens
- Schneeberg7 specimens
- Freiberg5 specimens
- Bad Schlema4 specimens
- Keeley-Frontier Mine3 specimens
- St Andreasberg Mining District3 specimens
- Aït Ahmane2 specimens
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About Proustite
Prominent specimens have been recovered from German, Moroccan, Chilean, Czech, and Mexican localities, among others. Classic localities produce sharp, well-centered crystals embedded in matrix or as loose aggregates, making Proustite a favorite for thumbnail and miniature displays. Collectors value the species for its vibrant color, crystal habit, and the historical associations tied to classic sulfide mineral deposits. While relatively delicate compared to tougher sulfides, pristine proustite crystals that retain their color and form are highly sought after by mineral enthusiasts.
