mineral

Hematoid Quartz (Fire Quartz)

Silicon Dioxide with Iron Oxide (SiO2 with Fe2O3)

Hardness: 7 on the Mohs scale. Color: Translucent to opaque white/translucent quartz with reddish-orange to brown hematite specks or inclusions. Luster: Vitreous to dull. Crystal structure: Trigonal (hexagonal system). Cleavage: None, exhibits conchoidal fracture.

Hardness: 7 on the Mohs scale
Luster: Vitreous to dull

Identified July 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed when iron-rich water or minerals coat quartz crystals during or after growth, depositing hematite (iron oxide) inclusions inside or on the surface of the quartz matrix.

Uses & applications

Popular in lapidary work, jewelry, crystal healing practices, decorative displays, and mineral collection.

Geological facts

Also widely known as 'Fire Quartz' or 'Harlequin Quartz'. The distinctive red flecks and staining are caused by microscopic inclusions of hematite or goethite embedded within the quartz body.

Field identification & locations

Identified by its characteristic quartz hardness, vitreous body, and distinct reddish-pink to rust-colored spots or streaks. Commonly found worldwide in hydrothermal veins and pegmatites, notably in Brazil, Madagascar, and the USA.

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