Quantity: 1 kilogram
Average size range: 5 to 20 millimeters
Tiger’s eye forms when quartz and limonite, a kind of iron ore, grow together in interwoven bands under extreme pressure. The special sheen that makes it a popular choice in jewelry is called chatoyance, which unlike other kinds of flash shows as distinct and defined bands rather than an overall shine. Blue tiger’s eye is also known as hawk’s eye.