gemstone

Red jasper or carnelian

Microcrystalline quartz (chalcedony), SiO₂; likely iron-rich red jasper or translucent carnelian

AI-generated identification · may be incorrect

Small polished/tumbled stone with reddish-brown color, vitreous to waxy luster, and no visible cleavage. Quartz hardness is about 6.5–7 Mohs; jasper is typically opaque, while carnelian is translucent at the edges.

Identified August 26, 2026More gemstone →

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At a glance

Common name: Red jasper or carnelian
Scientific name: Microcrystalline quartz (chalcedony), SiO₂; likely iron-rich red jasper or translucent carnelian
Category: gemstone
Identified: August 26, 2026
Method: Standard

AI Estimated Value

Approximately $1–$10 for a small common tumbled stone; $10–$50 or more for attractive natural color, translucency, or a polished cabochon.

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 fill cavities or fractures, later acquiring red coloration from iron oxides. Deposits occur in many geological ages and settings, commonly in volcanic or sedimentary rocks.

Uses & applications

Used for jewelry, cabochons, beads, carvings, and decorative objects; common tumbled pieces have modest value.

Geological facts

The image alone cannot reliably distinguish jasper from carnelian; transmitted light is the key test, with carnelian showing some translucency. A glassy uniform appearance may also indicate dyed chalcedony.

Field identification & locations

Commonly found worldwide, including India, Brazil, Madagascar, Uruguay, and the United States. Check for translucency, natural color variation, conchoidal fracture, and hardness greater than ordinary glass; avoid destructive testing.