mineral

Red Cubic Zirconia (Simulated Garnet)

Zirconium Dioxide (ZrO2)

Hardness: 8.0-8.5 Mohs scale; Color: Deep red (vibrant, saturated); Luster: Adamantine (diamond-like); Crystal Structure: Cubic; Specific Gravity: 5.5-6.0

Hardness: 8
Color: Deep red (vibrant, saturated)
Luster: Adamantine (diamond-like)

Identified March 27, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 8.0-8.5 Mohs scale; Color: Deep red (vibrant, saturated); Luster: Adamantine (diamond-like); Crystal Structure: Cubic; Specific Gravity: 5.5-6.0

Formation & geological history

Laboratory-created through the Skull Melting process, which involves heating powdered zirconium and stabilizers to approximately 4,982°F (2,750°C).

Uses & applications

Primary use in jewelry as a durable, affordable alternative to natural gemstones like Garnet or Ruby. Used in high-end costume jewelry.

Geological facts

Red cubic zirconia is known for its high dispersion—the ability to split light into spectral colors—giving it more 'fire' than many natural gemstones.

Field identification & locations

Identify in the field by checking for high density (specimen will feel heavier than glass) and checking for inclusions; cubic zirconia is typically flawless. These are commonly found in commercial jewelry retail.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

mineral