gemstone
Carnelian
Quartz (SiO2)
AI-generated identification · may be incorrectCarnelian has a Mohs hardness of 7, a vitreous to waxy luster, and a microcrystalline trigonal structure with conchoidal fracture.
Identified More gemstone →
Explore Carnelian in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Carnelian has a Mohs hardness of 7, a vitreous to waxy luster, and a microcrystalline trigonal structure with conchoidal fracture.
Formation & geological history
It forms in low-temperature hydrothermal environments or as groundwater deposits within cavities of pre-existing volcanic rocks.
Uses & applications
It is widely used in jewelry making, carved intaglios, and decorative ornamental items.
Geological facts
Ancient civilizations prized carnelian for seals and amulets, often associating it with courage and vitality.
Field identification & locations
Identified by its distinctive translucent orange-to-red color and waxy luster, it is 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