sedimentary

Jasper

Microcrystalline Quartz (SiO2)

AI-generated identification · may be incorrect

Hardness of 6.5 to 7 on the Mohs scale, opaque luster (waxy to vitreous), conchoidal fracture, variable colors including dark green, brown, red, and yellow, often featuring veins or banding.

Identified August 7, 2026More sedimentary →

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, opaque luster (waxy to vitreous), conchoidal fracture, variable colors including dark green, brown, red, and yellow, often featuring veins or banding.

Formation & geological history

Forms from the precipitation of silica-rich fluids in sedimentary environments or hydrothermal conditions, often replacing organic material or filling fractures in older rocks over millions of years.

Uses & applications

Used primarily in lapidary arts, making cabochons, beads, ornamental carvings, and jewelry.

Geological facts

Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and ability to take a high polish.

Field identification & locations

Identified by its high hardness (scratches glass), waxy luster, lack of cleavage, and opaque earthy or colorful patterns. Found worldwide in riverbeds, mountains, and sedimentary deposits.