gemstone

Red carnelian beads

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 6.5–7; translucent orange-red to reddish-brown color, glassy/waxy luster, cryptocrystalline quartz structure, no visible cleavage, specific gravity about 2.60–2.65. The uniformly spherical, glossy pieces are polished beads, possibly heat-treated or dyed.

Identified August 22, 2026More gemstone →

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Physical properties

Formation & geological history

Carnelian forms when silica-rich groundwater fills cavities and fractures in volcanic rocks, later acquiring iron coloration; deposits commonly range from Precambrian to younger volcanic settings. The beads are human-shaped and polished from rough chalcedony.

Uses & applications

Used extensively in jewelry, prayer beads, ornaments, and carving; durable enough for everyday wear. Common material has modest commercial value, while naturally vivid, translucent specimens command more.

Geological facts

Carnelian is a variety of chalcedony, and its red color mainly comes from iron oxides. Similar-looking red glass and dyed agate are common imitations.

Field identification & locations

Identify by its smooth waxy/glassy surface, translucency, hardness, and lack of cleavage; genuine material feels cool and should not scratch easily with a steel blade. Common sources include India, Brazil, Uruguay, Madagascar, and Botswana.