
gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness of 10 on the Mohs scale, adamantine luster, isometric crystal system, perfect octahedral cleavage, and a specific gravity of 3.51-3.52.
Identified More gemstone →
Explore Diamond in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 10 on the Mohs scale, adamantine luster, isometric crystal system, perfect octahedral cleavage, and a specific gravity of 3.51-3.52.
Formation & geological history
Formed deep within the Earth's mantle under extreme pressure and temperature conditions, then transported to the surface via kimberlite or lamproite volcanic pipes over billions of years.
Uses & applications
Extensively used in high-end jewelry, industrial cutting tools, abrasives, and precision drill bits due to its unmatched hardness and brilliance.
Geological facts
Diamonds are the hardest known natural substance on Earth and can conduct heat five times faster than copper.
Field identification & locations
Identified by extreme hardness that scratches all other minerals, high thermal conductivity, and strong dispersion of light. Found in major deposits globally including South Africa, Russia, Botswana, and Australia.
More like this
Other gemstone specimens
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
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