2.6" Orange Orpiment Crystals on Pyrite - Peru

This is a beautiful specimen of red-orange orpiment that formed in botryoidal masses, collected from Peru. The orpiment has a rich red and orange coloration, and formed from a pyrite-rich matrix. Large, partial pyrite crystals can actually be found on the underside of the specimen.


Orpiment is a bright orange to yellow arsenic sulfide mineral. Its name is derived from the latin phrase auripigmentum, meaning “gold pigment”. It is frequently found as a decay byproduct and in association with another arsenic mineral, realgar. Orpiment crystals are commonly found in dense groupings containing small, prismatic crystals, often with chisel-shaped or triangular pyramidal terminations.

Orpiment contains a significant amount of the poisonous mineral arsenic. While it’s not going to pose a health hazard sitting on a shelf, it’s recommended that you wash your hands after handling it.
Orpiment & Pyrite
Quiruvilca District, Santiago de Chuco Province, Peru
2.6 x 2"