The lovely purple stone known as purpurite jewelry ranges in transparency from opaque. It can range from violet to deep red to pink to magenta to purple; it frequently oxidizes to brown to black. Purpurite's crystal structure is orthorhombic. The stone is made of manganese, iron, and phosphate mineral, and it has a metallic to vitreous luster. The manganese and iron content of the stone affects the purprite's color.