KnowraRealgarLinked fromLinked fromThe 3 pages that link to Realgar, each with the reason it gives.All 3Broader topic 1Related 2ArsenicBroader topic: It is a naturally occurring arsenic ore and pigment mineral.OrpimentRelated: It commonly occurs with orpiment and shares its arsenic-rich chemistry.Arsenic trioxideRelated: Roasting realgar can produce arsenic oxides, including arsenic trioxide.