Simulant (likely Cubic Zirconia)
Simulant (likely Cubic Zirconia) · Round Brilliant
Good Cut
Carat
Estimated 1.50 - 2.00 carats
Color
D (Colorless)
Clarity
IF (Internally Flawless) to VVS1
Shape
Round Brilliant
Overall Assessment
Based on the high fire-to-brilliance ratio and the visual clarity, this is highly likely a Cubic Zirconia (CZ) simulant rather than a natural or lab-grown carbon diamond.
Cut Quality
Good
Brilliance
Moderate to high; white light return is consistent with simulant dispersion
Fire
High; the presence of distinct rainbow spectral flashes is very high for a natural diamond, suggesting Cubic Zirconia
Scintillation
Bold and localized flashes
Proportions
Standard commercial cut; girdle appears slightly thick to thick
Symmetry
Good
Polish
Very Good
Fluorescence
None
Inclusions
None visible; high clarity suggests non-diamond material
Blemishes
Surface shows high reflectivity consistent with synthetic simulants
Origin
Synthetic/Lab-manufactured simulant
Treatment Detection
None detected; material is inherently colorless
Estimated Value
$10 - $50 USD
Certification Estimate
Unlikely to be graded by GIA as a natural diamond; likely a novelty or fashion gem
Investment Potential
Low; simulants generally do not retain resale value
Similar Diamonds
Swarovski Zirconia, Moissanite
Setting Suggestions
Six-prong sterling silver or white gold plated setting
Care & Maintenance
Clean with warm soapy water; avoid abrasive surfaces as CZ is softer than diamond and can scratch
Interesting Facts
Cubic Zirconia has a higher dispersion rate than diamond, which is why it often displays more 'rainbow' fire in photographs.