Probable Cubic Zirconia or Costume Crystal
Probable Cubic Zirconia or Costume Crystal · Round Brilliant
Fair to Good (standard commercial cut) Cut

Carat
Estimated 0.50 to 0.75 carats
Color
Colorless (equivalent to D-E range)
Clarity
Eye-Clean (simulated IF/VVS)
Shape
Round Brilliant
Overall Assessment
Based on the visual 'windowing' and the specific dispersion of light against the white tissue, this specimen displays the optical properties of a synthetic simulant rather than a natural or lab-grown diamond.
Cut Quality
Fair to Good (standard commercial cut)
Brilliance
Moderate; the stone shows high surface reflectiveness but shallow internal light return
Fire
High; localized rainbow dispersive flashes characteristic of CZ
Scintillation
Predictable and symmetrical sparkle pattern
Proportions
Standard commercial proportions with high pavilion depth
Symmetry
Good
Polish
Good
Fluorescence
Indeterminable via image
Inclusions
None visible; appearance is internally glass-like and overly clear
Blemishes
None visible at this magnification
Origin
Synthetic/Factory-made
Treatment Detection
N/A - Synthetic material
Estimated Value
$5 - $20 USD (Costume Jewelry value)
Certification Estimate
N/A - Unlikely to be accepted by GIA/AGS as a natural diamond
Investment Potential
None; synthetic simulants do not retain resale value
Similar Diamonds
CZ fashion studs or Swarovski zirconias
Setting Suggestions
Fashion jewelry settings, silver-tone base metals, or stainless steel
Care & Maintenance
Clean with mild soap and water; avoid harsh chemicals which can dull the surface
Interesting Facts
Cubic Zirconia is heavier than real diamonds and lacks the thermal conductivity of a true carbon stone