
gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness of 10 on the Mohs scale, transparent to opaque, adamantine luster, isometric crystal system, perfect octahedral cleavage.
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, transparent to opaque, adamantine luster, isometric crystal system, perfect octahedral cleavage.
Formation & geological history
Formed under extreme heat and pressure deep within the Earth's mantle and brought to the surface by deep-seated volcanic eruptions called kimberlite pipes.
Uses & applications
Widely used in high-end jewelry and various industrial cutting, grinding, and drilling applications due to its extreme hardness.
Geological facts
Diamond is the hardest known natural material on Earth and conducts heat exceptionally well.
Field identification & locations
Identified by its unmatched hardness, adamantine luster, and high thermal conductivity; commonly mined in South Africa, Russia, and Canada.
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