Color:Blue, Violet, Brownish Color of streak: White Mohs' hardness: 7-71/2 Density: 2.58-2.66 Cleavage: Good Fracture: Conchoidal, Uneven, brittle Transparency: Transparent translucent
The color of iolite (Greek, Violet ) is usually blue. Inclusions of hematite and goethite sometimes cause reddish sheen or aventurescence. It has a greasy vitreous luster. Deposits found in Myanmar, Brazil, India, Madagascar, Sri Lanka, and the United States.