Rock Identifier
Red Tiger's Eye (Silicon dioxide with crocidolite inclusions (SiO2)) — gemstone
gemstone

Red Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, deep red to reddish-brown color with chatoyant luster, microcrystalline quartz crystal structure, specific gravity around 2.64-2.71.

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Physical properties

Hardness of 7 on the Mohs scale, deep red to reddish-brown color with chatoyant luster, microcrystalline quartz crystal structure, specific gravity around 2.64-2.71.

Formation & geological history

Formed through pseudomorphous replacement, where silica replaces original fibrous crocidolite asbestos over millions of years.

Uses & applications

Widely used for fashioning into polished beads, cabochons for jewelry, and ornamental carvings.

Geological facts

The striking silky chatoyancy or cat's-eye effect is caused by the parallel alignment of microscopic mineral fibers.

Field identification & locations

Identified by its distinctive shimmering bands of reddish-brown light shifting across the surface; mined primarily in South Africa and Australia.