gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectHardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown, Luster: Adamantine, Crystal Structure: Cubic, Cleavage: Octahedral, Specific Gravity: 3.52
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: 10 (Mohs scale), Color: Colorless to faint yellow/brown, Luster: Adamantine, Crystal Structure: Cubic, Cleavage: Octahedral, Specific Gravity: 3.52
Formation & geological history
Formed deep within the Earth's mantle under extreme pressure and temperature exceeding 1,000 degrees Celsius. Transported to the surface by deep-origin volcanic eruptions called kimberlites. Age typically range from 1 to 3.5 billion years.
Uses & applications
Primary use in high-end jewelry and intensive industrial applications such as cutting, drilling, and grinding tools due to its extreme hardness.
Geological facts
Diamond is the hardest natural substance known to man. Rare 'fancy' colors include blue, green, and pink which are caused by trace elements or structural defects during formation.
Field identification & locations
Identified by its high refractive index and hardness. In the field, it is typically found in kimberlite pipes or secondary alluvial deposits such as riverbeds and beach sands.
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
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Amber
Succinite (Organic Gemstone)
mineral
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
gemstone