gemstone
Tumbled orange carnelian (likely)
Chalcedony, microcrystalline quartz (SiO₂)
AI-generated identification · may be incorrectSmooth, opaque-to-translucent orange-brown stone with a waxy to vitreous polish; quartz hardness 6.5–7, trigonal crystal structure, no prominent cleavage. The image does not reveal internal texture, so identification is provisional.
Identified More gemstone →
Explore Tumbled orange carnelian (likely) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Smooth, opaque-to-translucent orange-brown stone with a waxy to vitreous polish; quartz hardness 6.5–7, trigonal crystal structure, no prominent cleavage. The image does not reveal internal texture, so identification is provisional.
Formation & geological history
Carnelian forms when silica-rich fluids deposit chalcedony in cavities and fractures, often in volcanic rocks; iron oxides produce its orange color. Deposits occur in many ages and regions.
Uses & applications
Used for beads, cabochons, pendants, and ornamental objects; also collected as a tumbled stone.
Geological facts
Carnelian is a colored variety of chalcedony, not a separate mineral species; heating can deepen its orange-red color.
Field identification & locations
Look for consistent orange color, translucency at thin edges, and a smooth waxy surface; common sources include India, Brazil, Uruguay, and Madagascar. The polished appearance is consistent with a tumbled specimen.
More like this
Other gemstone specimens
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Topaz
Al2SiO4(F,OH)2
mineral
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary