gemstone
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, orange to brownish-red color, vitreous to waxy luster, microcrystalline crystal structure, conchoidal fracture with no cleavage.
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 6.5-7 on the Mohs scale, orange to brownish-red color, vitreous to waxy luster, microcrystalline crystal structure, conchoidal fracture with no cleavage.
Formation & geological history
Forms in low-temperature hydrothermal environments and cavities of volcanic rocks through the deposition of silica-rich solutions.
Uses & applications
Widely used in jewelry making, carved intaglios, and spiritual or crystal healing practices.
Geological facts
Carnelian was prized in ancient Egypt as a stone representing life and was commonly placed in tombs to assist the dead in the afterlife.
Field identification & locations
Easily identified by its translucent reddish-orange color and waxy luster; found globally with major deposits in 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
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Pearl necklace
Pearl, primarily aragonite (CaCO₃) and conchiolin
gemstone