sedimentary

Jasper

Silicon dioxide (Microcrystalline Quartz, SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Reddish-brown/orange; Luster: Dull to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Reddish-brown/orange
Luster: Dull to waxy

Identified June 12, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Reddish-brown/orange; Luster: Dull to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica from water, often in volcanic or sedimentary environments where iron oxides provide the distinct coloration. Common in regions with ancient sedimentary basements.

Uses & applications

Used primarily as a gemstone in jewelry, decorative carvings, and as a popular specimen for mineral collectors.

Geological facts

Jasper has been used for millennia for seals and amulets. The name comes from the Greek word 'iaspis', meaning spotted stone, though this specimen appears relatively uniform.

Field identification & locations

Found globally but consistent with the sedimentary and river basin geology of the Saratov region in Russia. Identify in the field by its hardness (will scratch glass) and smooth, non-porous surface.