mineral

Red jasper (likely tumbled or naturally worn)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides

AI-generated identification · may be incorrect

Typically opaque brick-red to orange-red, earthy to dull vitreous luster, hardness about 6.5–7 Mohs, and no visible cleavage; dense, fine-grained cryptocrystalline quartz. The specimen appears rough and partially polished, with dark inclusions or surface pits.

Identified September 13, 2026More mineral →

Explore Red jasper (likely tumbled or naturally worn) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Red jasper (likely tumbled or naturally worn)
Scientific name: Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides
Category: mineral
Identified: September 13, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a small ordinary rough or tumbled piece; attractive patterned or high-quality lapidary jasper may sell for $20–$100+.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Forms when silica-rich fluids replace or cement volcanic ash, sediments, or cavities, with iron oxides producing the red color. Jasper deposits range from Precambrian to recent geological ages and occur in volcanic and sedimentary terrains.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and lapidary pieces; historically used for tools and decorative stone. Common material has modest commercial value.

Geological facts

Jasper is a variety of chalcedony and may grade into chert, iron-rich silica, or brecciated jasper. Color intensity depends on hematite and other iron minerals.

Field identification & locations

Identify it by its opaque red color, fine texture, waxy-to-dull luster, and inability to scratch with a steel knife; quartz should scratch glass. Common sources include India, Madagascar, Brazil, Australia, and the western United States.