Cubic Zirconia
Zirconium Oxide (Synthetic) · Semi-Precious Gemstone (Diamond Simulant)
Crystal System
Cubic (Isometric); typically faceted in round brilliant cuts for jewelry
Mineral Group
Oxides
Chemical Formula
ZrO2 (+Y2O3 or CaO stabilizer)
Formation Process
Synthetic/Hydrothermal (Czochralski or Skull Melting process)
About This Crystal
Transparent, colorless mass with high dispersion and vitreous to sub-adamantine luster. This specimen is pavé-set in a metal alloy ring featuring celestial star motifs.
Physical Characteristics
Colorless (body), white (streak); octahedral cleavage; conchoidal fracture; density 5.6-6.0 g/cm3; can exhibit yellow-green fluorescence under UV light.
Optical Properties
Singly refractive; refractive index 2.15-2.18; dispersion 0.058-0.066 (higher than diamond); no pleochroism.
Hardness & Durability
Origin Region
Synthetic/Lab-grown; primary production in Russia, China, and the USA
Hardness & Durability
Mohs hardness 8.0-8.5; high toughness but prone to abrasion over years of wear; higher resistance to scratching than glass but less than diamond.
Care & Maintenance
Safe with warm soapy water and soft brush; ultrasonic cleaners are generally safe but avoid harsh chemicals and extreme thermal shock.
Rarity & Value
Abundant/Common; very low market value for the stones themselves; valued primarily based on metal setting and design.
Special Characteristics
High dispersion producing 'fire' or rainbow flashes; isotropic (single refraction) makes it distinct from natural Zircon.
Lore & History
Mass-produced since the 1970s as a diamond substitute; historically associated with affordability and synthetic innovation; traditionally used in modern crystal practices to represent clarity and focus.