Tiger-eye is one of the many varieties of "gemmy" quartz of interest to rockhounds. Others are amethyst, rock crystal, smoky quartz, citrine, quartz cat's-eye, rose quartz, aventurine, chalcedony, agate, carnelian, sard, bloodstone, jasper, plasma, and chrysoprase.
Tiger-eye is composed of a compact mass of quartz of a fibrous nature, the result of silica replacing the original particles of crocidolite (asbestos). Large deposits of tiger-eye are located in South Africa.
Rocks from WSU Thomas Edison Mineral Collection
Index of Specimen Images
Table of Contents