mineral

Jasper

Microcrystalline Quartz (SiO2)

Hardness of 6.5 to 7 on the Mohs scale, color ranges from yellow, brown, red to green, vitreous to dull luster, cryptocrystalline structure, conchoidal fracture, specific gravity around 2.65.

Identified July 29, 2026More mineral →

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, color ranges from yellow, brown, red to green, vitreous to dull luster, cryptocrystalline structure, conchoidal fracture, specific gravity around 2.65.

Formation & geological history

Formed through the precipitation of silica-rich fluids in sedimentary or volcanic environments, often during hydrothermal activity or diagenesis.

Uses & applications

Used primarily in ornamental carvings, cabochons, jewelry, and as a collector's mineral specimen.

Geological facts

Jasper has been used since ancient times for seals, signet rings, and talismans by various civilizations including the Egyptians, Greeks, and Romans.

Field identification & locations

Can be identified by its opaque nature, waxy luster, and conchoidal fracture. Commonly found worldwide in riverbeds, sedimentary deposits, and volcanic regions.