mineral

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

Hardness of 7 on the Mohs scale, golden-brown to yellow-brown color, silky to vitreous luster, and a hexagonal crystal system with fibrous structure.

Identified October 24, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, golden-brown to yellow-brown color, silky to vitreous luster, and a hexagonal crystal system with fibrous structure.

Formed as a pseudomorph of quartz replacing the mineral crocidolite through metasomatism in ancient sedimentary rock formations.

Widely used in making cabochons, beads, jewelry, decorative carvings, and as a popular collector's specimen.

Famous for its distinct chatoyancy, a cat's-eye optical effect caused by the parallel arrangement of quartz fibers.

Easily identified by its golden-brown stripes and silky light reflection; primarily sourced from South Africa and Western Australia.

Gneiss or Schist

Gneiss or Mica Schist with Garnet

Limonite

FeO(OH)•nH2O

Limonite

FeO(OH)•nH2O

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

Limonite

FeO(OH)•nH2O

Tumbled granite

Granite, a coarse-grained felsic intrusive igneous rock