Nagyagite specimens for sale

19 for sale · $640–$12,500 USD

17 in the gallery

Nagyagite is a lead-rich sulfide mineral that forms in complex, often metallic, crystals. Its color can range from black to dark gray with a bright, metallic lustre, and it commonly occurs in massive or vein-like habits alongside other sulfides. The mineral contains sulfur with lead-rich composition and may include antimony and trace gold and tellurium in its structure, contributing to its unusual appearance and reflective surfaces.

Formula
[Pb3(Pb,Sb)3S6](Au,Te)3
Rarity
Ultra Rare
Stability
Stable
Collector interest
Very High Interest
Classification notes
Sulfosalt mineral; lead-containing sulfosalts with complex Pb–Sb–S framework and Au/Te associations (IMA symbol Ngy)

Key characteristics

Crystal system
monoclinic
Mohs hardness
1–1.5
Specific gravity
7.2–7.5
Luster
metallic
Transparency
opaque
Color
gray, black
Streak
black
Cleavage
perfect
Fracture
uneven
Crystal habit
tabular, bladed, granular, massive
  • Classic / historic

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Where Nagyagite is found

Top localities

  1. Săcărâmb6 specimens
  2. Deva1 specimen

About Nagyagite

Romania is the country most associated with Nagyagite specimens, particularly from antique sulfide-rich deposits that preserve delicate crystalline forms. Collectors value well-formed crystals and well-documented locality specimens, which demonstrate the mineral’s intricate crystallography and multifaceted sheen. Though not among the most common sulfides, Nagyagite pieces from historic Romanian localities remain sought after for their technical significance and aesthetic possibilities in display cabinets.