gemstone
Carnelian
Silicon dioxide (chalcedony variety), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, microcrystalline crystal structure, and a reddish-orange to brown color.
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 6.5 to 7 on the Mohs scale, vitreous to waxy luster, microcrystalline crystal structure, and a reddish-orange to brown color.
Formation & geological history
Forms in low-temperature hydrothermal environments and cavities of volcanic or sedimentary rocks through the deposition of silica-rich groundwater.
Uses & applications
Widely used in jewelry for rings and beads, as well as historically carved into signet seals and talismans.
Geological facts
Carnelian was highly prized in ancient Egypt as a stone of courage and vitality, often accompanying pharaohs into the afterlife.
Field identification & locations
Identified by its distinctive translucent orange-red coloration and conchoidal fracture, commonly sourced from India, Brazil, and Uruguay.
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