gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectMohs hardness of 10, colorless or tinted, adamantine luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.51.
Identified More gemstone →
Explore Diamond in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Mohs hardness of 10, colorless or tinted, adamantine luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.51.
Formation & geological history
Formed deep within the Earth's mantle under extreme pressure and temperature, brought to the surface via kimberlite pipes over billions of years.
Uses & applications
Primary gemstone for high-end jewelry and widely used in industrial cutting, grinding, and drilling tools due to extreme hardness.
Geological facts
Diamond is the hardest known natural material on Earth and can only be scratched by another diamond. Famous large specimens include the Cullinan diamond.
Field identification & locations
Identified by extreme hardness, high refractive index, and thermal conductivity testing. Found in South Africa, Russia, Botswana, and Canada.
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