mineral

Tiger's Eye (and Hematite/Jasper Matrix)

SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale); Color: Golden-brown, black, and silver-grey; Luster: Silky to metallic; Crystal structure: Trigonal (fibrous); Cleavage: None; Specific gravity: 2.64–2.71.

Hardness: 7 (Mohs scale)
Color: Golden-brown, black, and silver-grey
Luster: Silky to metallic

Identified March 9, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Golden-brown, black, and silver-grey; Luster: Silky to metallic; Crystal structure: Trigonal (fibrous); Cleavage: None; Specific gravity: 2.64–2.71.

Formation & geological history

Formed through the replacement of fibrous crocidolite (asbestos) by silica (quartz). This specimen appears to be 'Tiger Iron,' a banded combination of tiger's eye, red jasper, and hematite found in billion-year-old banded iron formations.

Uses & applications

Primarily used in jewelry (cabochons and beads), decorative carvings, and as a popular metaphysical or collector's specimen.

Geological facts

Tiger's Eye exhibits an optical effect known as chatoyancy, which is caused by the reflection of light off the parallel mineral fibers within the stone. Tiger Iron is specifically sourced from the Ord Ranges in Western Australia.

Field identification & locations

Identify in the field by its distinct alternating bands of shimmering gold, dark heavy metallic hematite, and occasionally red jasper. It is most commonly found in South Africa and Western Australia. Collectors look for high chatoyancy and neat banding.