Likely Cubic Zirconia or Simulant
Likely Cubic Zirconia or Simulant · Round Brilliant
Good to Very Good (Commercial Cut) Cut
Carat
Estimated 0.05 to 0.10 carats per stone
Color
Equivalent to D-E (Colorless)
Clarity
Equivalent to VVS-VS
Shape
Round Brilliant
Overall Assessment
The stones appear to be high-quality colorless simulants (likely Cubic Zirconia) functioning as accents in a vintage yellow gold pearl pendant. While they provide excellent sparkle, they lack the characteristic inclusions of natural earth-mined diamonds of this size.
Cut Quality
Good to Very Good (Commercial Cut)
Brilliance
High white light return, typical of synthetic simulants
Fire
Strong spectral dispersion (rainbow flashes) prominent in the left stone
Scintillation
Crisp light and dark pattern typical of machine-cut accents
Proportions
Standard commercial round proportions; slightly thick girdles visible
Symmetry
Good
Polish
Good
Fluorescence
None visible under current lighting
Inclusions
No significant internal inclusions visible at this magnification; extremely clear
Blemishes
Minor surface abrasions and dust particles
Origin
Synthetic/Laboratory Manufactured
Treatment Detection
None (Synthetic base material)
Estimated Value
$5 - $50 for the set of accents (primarily value is in the metal and pearls)
Certification Estimate
Unlikely to be certified due to small size and simulant nature; would be graded 'Simulant' by GIA/IGI
Investment Potential
Low; decorative value only
Similar Diamonds
Melee diamonds used in costume or lower-tier fine jewelry
Setting Suggestions
Currently in a vintage-style prong setting; keep in gold to prevent tarnish transfer
Care & Maintenance
Clean with mild soap and warm water; avoid ultrasonic cleaners if pearls are soft-mounted
Interesting Facts
The high dispersion and lack of visible natural inclusions in such small stones often indicate a high-quality simulant like CZ used in mid-century costume jewelry.