
mineral
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness: 10 (Mohs scale), Color: Colorless/White, Luster: Adamantine, Crystal structure: Isometric-Hexoctahedral, Cleavage: Perfect octahedral, Specific gravity: 3.52
Identified More mineral →
Explore Diamond in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 10 (Mohs scale), Color: Colorless/White, Luster: Adamantine, Crystal structure: Isometric-Hexoctahedral, Cleavage: Perfect octahedral, Specific gravity: 3.52
Formation & geological history
Formed under high temperature and pressure deep within the Earth's mantle (100+ miles below ground) over billions of years, then brought to the surface by volcanic eruptions (kimberlite pipes).
Uses & applications
Widely used as high-end jewelry (engagement rings), industrial abrasives, cutting tools, and high-performance electronics due to thermal conductivity.
Geological facts
Diamond is the hardest naturally occurring substance on Earth. Most natural diamonds are between 1 billion and 3.5 billion years old.
Field identification & locations
Identified by its extreme hardness (scratches all other materials), brilliant luster, and high refractive index. Often found in kimberlite pipes or alluvial deposits.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous