mineral

Red Jasper (Quartzite)

Silicon Dioxide (SiO2) with iron oxide inclusions

Hardness: 6.5-7 Mohs. Color: Red to brownish-red. Luster: Dull to vitreous when polished. Crystal Structure: Trigonal (microcrystalline/cryptocrystalline). Cleavage: None. Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Red to brownish-red
Luster: Dull to vitreous when polished

Identified June 27, 2026More mineral →

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Physical properties

Formation & geological history

Formed predominantly from the silica-rich sediments or volcanic ash that undergo metamorphism or diagenesis, with red coloration derived from hematite (iron) inclusions. Found in sedimentary or metamorphic layers across many geological ages.

Uses & applications

Used frequently in jewelry as cabochons, decorative carvings, metaphysical 'healing' stones, and ornamental landscaping.

Geological facts

Red jasper is known as the 'Stone of Endurance' and has been used since ancient times for amulets and seals. It is a variety of chalcedony that owes its opacity to its high mineral inclusion content.

Field identification & locations

Identify by its smooth, waxy texture (if water-worn), high hardness (will scratch glass), and opaque red color. Commonly found as pebbles in riverbeds or on beaches in volcanic regions.

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