sedimentary

Red Veined Jasper

Silicon Dioxide with Hematite inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Cream or tan base with deep red spider-web-like veins; Luster: Vitreous to waxy after polishing; Structure: Microcrystalline quartz.

Hardness: 6
Color: Cream or tan base with deep red spider-web-like veins
Luster: Vitreous to waxy after polishing

Identified July 14, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Cream or tan base with deep red spider-web-like veins; Luster: Vitreous to waxy after polishing; Structure: Microcrystalline quartz.

Formation & geological history

Formed through the deposition of silica-rich water into volcanic ash or fine sediment, with the red veins caused by the presence of iron oxides (hematite) filling fractures within the stone.

Uses & applications

Primarily used for lapidary work including tumbled stones, jewelry beads, cabochons, and decorative ornamental carvings.

Geological facts

Also known as Spiderweb Jasper. In ancient cultures, jasper was often considered a stone of protection and was frequently used to create seals and amulets.

Field identification & locations

Identify by its opaque white or beige matrix and the distinct dendritic or web-like red patterns. It is frequently found in locations with volcanic-sedimentary history like South Africa, Brazil, and the USA.