gemstone

Orange carnelian (possibly dyed agate)

Microcrystalline quartz, SiO₂; chalcedony variety

AI-generated identification · may be incorrect

Small polished cabochon with vivid orange color and waxy-to-glassy luster; quartz has Mohs hardness 7 and trigonal crystal structure, though chalcedony is cryptocrystalline. The image alone cannot establish whether the color is natural or enhanced.

Identified October 11, 2026More gemstone →

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Physical properties

Formation & geological history

Forms as silica-rich chalcedony filling cavities and fractures, commonly in volcanic rocks; deposits occur in Brazil, India, Uruguay, and elsewhere. Its age depends on the host deposit.

Uses & applications

Used for beads, cabochons, inlay, and decorative objects; common material has modest value.

Geological facts

Carnelian is colored chiefly by iron oxides; heating or dyeing can intensify orange-red hues.

Field identification & locations

Identify by its translucent orange body, smooth polish, and hardness; natural color may show subtle banding, while dye can concentrate in cracks. As pictured, a small ordinary cabochon is typically about $1–$10.