Scientific Name: Variety of Quartz
Group: Silicates - tectosilicates
Chemical composition: SiO2FeO
Colors: Golden to red brown
Formation: Hexagonal/trigonal crystals; Fibrous form
Principal Sources: United States, South Africa, Australia, Canada, Korea, China, Brazil, Namibia, India, Spain and Burma
Special Notes: Tiger iron is an altered rock composed chiefly of tiger's eye, red jasper, and black hematite. The undulating, contrasting bands of color and luster make for an attractive motif.