Orpiment is an orange-yellow arsenic sulfide mineral (arsenic trisulfide or As₂S₃) known for its vibrant colour, its ancient use as a yellow pigment, and its high toxicity. This naturally occurring mineral can be found in volcanic fumaroles, hot springs, and hydrothermal veins, often associated with the mineral realgar. At Mr Gold's Fossils and Minerals, we pride ourselves on sourcing unique and high-quality specimens like Orpiment to enrich your collection. Please handle with care due to its toxicity, but marvel at its stunning beauty and historical significance.