English: Tijgeroog.
Synonym: Tiger eye.
Chemical: Silica, silicon dioxide, SiO2.
Color: golden to red-brown colour.
Lustre: silky
MineralogyTiger's eye is a chatoyant gemstone that is usually a metamorphic rock.
Clades:
Quartzes.
Relation: blue-coloured mineral hawk's eye gain their silky, lustrous appearance from the parallel intergrowth of quartz crystals and altered amphibole fibres that have mostly turned into limonite.