
gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness of 10 on the Mohs scale, transparent to opaque color range, adamantine luster, and isometric crystal system.
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 color range, adamantine luster, and isometric crystal system.
Formation & geological history
Formed under high temperature and extreme pressure conditions in Earth's mantle over billions of years.
Uses & applications
Extensively used in fine jewelry, cutting tools, and industrial abrasives.
Geological facts
Diamond is the hardest naturally occurring substance known on Earth and conducts heat exceptionally well.
Field identification & locations
Identified by its extreme hardness, high refractive index, and adamantine luster; found in kimberlite pipes globally.
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