
gemstone
Diamond (Princess Cut)
Carbon (C)
Hardness: 10 (Mohs scale), Color: Colorless to faint yellow, Luster: Adamantine, Crystal System: Isometric, Specific Gravity: 3.51, Cleavage: Perfect octahedral
- Luster
- Adamantine, Crystal System: Isometric, Specific Gravity: 3
Identified More gemstone →
Explore Diamond (Princess Cut) 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, Luster: Adamantine, Crystal System: Isometric, Specific Gravity: 3.51, Cleavage: Perfect octahedral
Formation & geological history
Formed under extreme pressure and high temperature in the Earth's mantle, transported to the surface via kimberlite volcanic eruptions over billions of years.
Uses & applications
Primary use in high-end jewelry (engagement rings) and industrial applications for cutting, grinding, and drilling due to extreme hardness.
Geological facts
Diamonds are the hardest natural substance on Earth. The 'Princess Cut' was developed in the 1960s-70s and is characterized by its square shape and high brilliance.
Field identification & locations
Identify by extreme hardness (scratches all other minerals), high refractive index (brilliance), and thermal conductivity. Professional testing is required to distinguish from Cubic Zirconia or Moissanite.
More like this
Other gemstone specimens
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Cubic Zirconia (or possibly Diamond)
Zirconium dioxide (or Carbon)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral