$420Median
1Sold (12 mo)
$420Last sale
Recent salesSee more
Gratonite specimens for sale
6 for sale · $400–$6,000 USD
2 in the gallery
Gratonite is a lead-arsenide sulfide mineral that crystallizes in complex, often prismatic shapes with a metallic to submetallic lustre. The mineral typically presents as silver-gray or lead-gray crystals that can display a subtle tarnish and a bright, reflective surface when well-formed. Habit ranges from isolated crystals to aggregates and small clusters, frequently forming in hydrothermal ore veins where it associates with other sulfides and sulfosalts. Notable grain textures and the potential for highly reflective faces make Gratonite attractive to collectors who seek crisp crystallography and metallic luster.
- Formula
- Pb9As4S15
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Very High Interest
- Classification notes
- Sulfosalt mineral; lead-arsenide sulfide family
Buy Gratonite specimens
View all 6Where Gratonite is found
Top localities
- Excelsior Mine1 specimen
About Gratonite
Significant localities include Australia, Peru, Bolivia, and Spain, where Gratonite has been recovered from hydrothermal environments and sulfide-rich deposits. Specimens from these regions are prized for their well-formed crystals and the contrast between the metallic bodies and tarnished surfaces that develop over time. Collectors value Gratonite for its rarity, the precision of crystal forms, and its contribution to series of lead-arsenide sulfides. A well-prepared display thumbnail or cabinet specimen highlights the mineral’s linear, faceted faces and the glossy, silvery sheen that remains striking under good lighting.
