mineral

Red Jasper

SiO2 (Silicon Dioxide with Hematite inclusions)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale. Color: Opaque reddish-brown to bright red. Luster: Vitreous to dull. Crystal Structure: Trigonal (microcrystalline quartz). Cleavage: None, exhibits conchoidal fracture. Specific Gravity: ~2.6-2.7.

Hardness: 6
Color: Opaque reddish-brown to bright red
Luster: Vitreous to dull

Identified July 22, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the accumulation of fine-grained silica in hydrothermal veins or sedimentary deposits, with red coloration originating from iron oxide (hematite) inclusions.

Uses & applications

Widely used in lapidary arts, jewelry, decorative carvings, tumbling, and as a popular gemstone for rock collections.

Geological facts

Red jasper has been used since antiquity in amulets and seal stones. It was associated with protection, strength, and vitality across ancient cultures including Egypt and Greece.

Field identification & locations

Identified by its distinctive opaque red color, hardness that scratches glass, smooth waxy/vitreous surface, and lack of cleavage. Commonly found in riverbeds, alluvial deposits, and regions with high silica hydrothermal activity worldwide.