gemstone

Orange chalcedony pendant (likely carnelian agate)

Chalcedony, microcrystalline quartz (SiO₂); orange variety commonly called carnelian

AI-generated identification · may be incorrect

Translucent orange with pale cloudy bands; vitreous to waxy luster, Mohs hardness 6.5–7, trigonal quartz crystals too fine to see, no cleavage. The image shows a polished, shaped pendant on a cord.

Identified September 23, 2026More gemstone →

Explore Orange chalcedony pendant (likely carnelian agate) in the encyclopedia →

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Physical properties

Translucent orange with pale cloudy bands; vitreous to waxy luster, Mohs hardness 6.5–7, trigonal quartz crystals too fine to see, no cleavage. The image shows a polished, shaped pendant on a cord.

Formation & geological history

Forms as silica deposits in cavities and veins, often in volcanic rocks; the exact age and locality cannot be determined from the image.

Uses & applications

Used for pendants, beads, and decorative carvings; chalcedony is also used for small ornamental objects.

Geological facts

Carnelian’s orange color is commonly due to iron impurities. Similar-looking orange chalcedony may be dyed, so appearance alone cannot establish treatment.

Field identification & locations

Look for a smooth, waxy surface and translucent orange color; natural material often has subtle cloudy zones. Common sources include India, Brazil, Uruguay, and Madagascar.