mineral

Red Jasper

Silicon Dioxide (SiO2 with Hematite impurities)

Hardness: 6.5-7 on Mohs scale; Color: Red to deep reddish-brown; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline/cryptocrystalline quartz); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91.

Hardness: 6
Color: Red to deep reddish-brown
Luster: Vitreous to waxy

Identified July 22, 2026More mineral →

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Physical properties

Formation & geological history

Forms when fine silica-rich solutions precipitate within sedimentary or volcanic rocks, often infused with iron oxides (hematite) which give it its distinct red color.

Uses & applications

Used extensively in lapidary arts, jewelry (cabochons, beads), decorative carving, and as a popular tumbled stone for rock collectors.

Geological facts

Red Jasper gets its rich red hue from fine inclusions of iron oxide minerals like hematite. Historically, it was revered as a stone of endurance, physical strength, and protection across ancient cultures including Egypt and Greece.

Field identification & locations

Look for an opaque red, smooth, microcrystalline texture with conchoidal fracture patterns when broken. Commonly found along riverbeds, beaches, and in volcanic terranes worldwide, such as in India, Brazil, South Africa, and the USA.

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