Rock Identifier
Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary
sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

AI-generated identification · may be incorrect

Hardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color, waxy to vitreous luster, and conchoidal fracture with no cleavage.

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color, waxy to vitreous luster, and conchoidal fracture with no cleavage.

Formation & geological history

Formed from silica-rich sediments or volcanic ash accumulating in marine environments, often colored by iron oxide impurities.

Uses & applications

Used primarily for ornamental carvings, polished cabochons, jewelry, and lapidary art.

Geological facts

Ancient civilizations used red jasper for protective amulets and carved talismans due to its association with blood and vitality.

Field identification & locations

Identify by its rich red color, opaque appearance, and hard conchoidal breaking pattern. Commonly found globally in hydrothermal veins and sedimentary deposits.