mineral

Rainbow Hematite Ring

Iron(III) oxide (Fe2O3) with thin-film coating

Hardness: 5.5-6.5 (Mohs), Color: Metallic grey with iridescent rainbow sheen, Luster: Metallic/Submetallic, Crystal: Trigonal, Cleavage: None, Specific Gravity: 5.26.

Hardness: 5

Identified June 20, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5 (Mohs), Color: Metallic grey with iridescent rainbow sheen, Luster: Metallic/Submetallic, Crystal: Trigonal, Cleavage: None, Specific Gravity: 5.26.

Formation & geological history

Hematite forms in sedimentary, igneous, or metamorphic environments through hydrothermal activity or precipitation from water. This specific specimen is man-made/treated with a titanium vapor deposition process.

Uses & applications

Primarily used for costume jewelry, magnetic therapy accessories, and decorative collectibles.

Geological facts

Natural iridescent hematite is called 'Turgite,' but the vibrant geometric pieces found in gift shops are typically sintered powdered iron oxide coated with a thin layer of titanium or aluminum to create the rainbow efecto.

Field identification & locations

Identify by its weight (dense for its size) and a red-brown streak test on unglazed porcelain. These rings are common in tourist areas.

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