
mineral
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness: 10 Mohs; Color: Colorless to faint blue/yellow; Luster: Adamantine; Crystal Structure: Isometric-hexoctahedral; Specific Gravity: 3.51-3.53
- Hardness
- 10 Mohs
- Color
- Colorless to faint blue/yellow
- Luster
- Adamantine
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; Color: Colorless to faint blue/yellow; Luster: Adamantine; Crystal Structure: Isometric-hexoctahedral; Specific Gravity: 3.51-3.53
Formation & geological history
Formed under high pressure and temperature conditions deep within the Earth's mantle, typically at depths of 150-250km, and transported to the surface via volcanic eruptions in kimberlite pipes.
Uses & applications
Primary use in high-end jewelry (engagement rings, necklaces), and industrial applications such as cutting, grinding, and drilling tools due to its extreme hardness.
Geological facts
The name 'diamond' comes from the Greek word 'adamas', meaning invincible. They are the only gemstone made of a single element: Carbon.
Field identification & locations
Identified by its extreme hardness (cannot be scratched by any other material), high refractive index, and characteristic brilliance. Common locations include South Africa, Russia, Canada, and Botswana.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Mineral Sand (Heavy Mineral Sand Concentrate)
Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite
mineral
Calcite–fluorite mineral specimen with iron-oxide staining
Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides
mineral
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Schist
Schist
Metamorphic