Rock Identifier
Red Jasper (Silicon Dioxide (Microcrystalline Quartz), SiO2) — mineral
mineral

Red Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

AI-generated identification · may be incorrect

Hardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, waxy luster, and microcrystalline trigonal crystal structure with conchoidal fracture.

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Physical properties

Hardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, waxy luster, and microcrystalline trigonal crystal structure with conchoidal fracture.

Formation & geological history

Forms through the hydrothermal deposition of silica-rich solutions in sedimentary or volcanic environments, often occurring globally in ancient marine deposits.

Uses & applications

Widely used for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for rock tumbling and metaphysical collections.

Geological facts

Red Jasper has been prized since antiquity as a protective talisman and was frequently used by ancient Egyptians and Romans to carve signet rings and amulets.

Field identification & locations

Easily identified by its deep red coloration, non-porous waxy feel, and ability to scratch glass. Commonly found in stream beds and weathering zones worldwide.