mineral
Carnelian
Silicon dioxide (Chalcedony variety, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale. Exhibits a vitreous to waxy luster with vibrant orange, red, or brownish-red hues and translucent to opaque transparency.
Identified More mineral →
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. Exhibits a vitreous to waxy luster with vibrant orange, red, or brownish-red hues and translucent to opaque transparency.
Formation & geological history
Formed via the deposition of silica-rich groundwater within cavities of pre-existing rocks, typically in volcanic environments over millions of years.
Uses & applications
Extensively utilized for making ornamental carvings, beads, polished towers, and high-end gemstone jewelry.
Geological facts
Carnelian has a rich historical significance, frequently used in ancient Rome and Egypt for signet rings and amulets due to its durability and striking color.
Field identification & locations
Easily identified by its characteristic reddish-orange coloration and conchoidal fracture. Commonly sourced from deposits in Brazil, India, and Madagascar.
