gemstone
Carnelian
Silicon Dioxide (Chalcedony variety)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale; color ranges from orange-pink to deep reddish-brown; waxy to vitreous luster; microcrystalline crystal structure.
Identified More gemstone →
Explore Carnelian in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on Mohs scale; color ranges from orange-pink to deep reddish-brown; waxy to vitreous luster; microcrystalline crystal structure.
Formation & geological history
Forms in low-temperature hydrothermal environments and cavities of volcanic rocks through the deposition of silica-rich groundwater.
Uses & applications
Widely used in lapidary arts, carved into beads, cabochons, and decorative items like this heart-shaped pocket stone.
Geological facts
Historically used in ancient Rome and Egypt for signet rings and amulets due to wax not sticking to its smooth surface.
Field identification & locations
Identified by its translucent orange-red color and conchoidal fracture, commonly sourced from India, Brazil, and Madagascar.
More like this
Other gemstone specimens
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
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