Likely Moissanite or Cubic Zirconia based on high dispersion/fire compared to standard diamond patterns
Likely Moissanite or Cubic Zirconia based on high dispersion/fire compared to standard diamond patterns · Princess Cut (Square Modified Brilliant)
Good to Very Good (geometry appears slightly rounded for a standard princess) Cut

Carat
Estimated 1.00 to 1.50 carats (approx. 5.5-6.5mm visually)
Color
Near Colorless (Estimated G-H equivalent)
Clarity
Eye-clean (Estimated VS1-VS2 equivalent based on visual transparency)
Shape
Princess Cut (Square Modified Brilliant)
Overall Assessment
This appears to be a well-cut square princess stone, likely a high-quality diamond simulant (like Moissanite) given the intense rainbow fire (dispersion) visible in common lighting conditions. A professional thermal test is required for definitive identification.
Cut Quality
Good to Very Good (geometry appears slightly rounded for a standard princess)
Brilliance
High (significant white light return)
Fire
Very High (strong blue and rainbow spectral dispersion suggests a high refractive index consistent with simulant)
Scintillation
Moderate to High; displays a broad, chunky flash pattern
Proportions
Table appears slightly large (approx 75%); crown height seems shallow
Symmetry
Good (corners appear relatively equal, though alignment shows slight asymmetry in the facet pattern)
Polish
Good (surface reflections appear smooth but are obscured by graininess in the photo)
Fluorescence
None apparent from static image
Inclusions
No major internal flaws visible to the naked eye at this resolution
Blemishes
No major surface chips visible, though edges show some light rounding
Origin
Likely synthetic/lab-created based on the high fire-to-size ratio and clarity
Treatment Detection
None detected visually (standard colorless material characteristics)
Estimated Value
$50 - $400 USD (Potential simulant pricing) or significantly higher if natural ($3,000 - $7,000)
Certification Estimate
Likely a commercial laboratory certificate (IGI or GRA for stimulants/lab stones)
Investment Potential
Low (especially if a simulant or lab-grown); these materials typically lose value over time
Similar Diamonds
Standard Princess Cut Lab-Grown Diamonds or high-quality Moissanite retailers
Setting Suggestions
Four-prong cathedral or V-prong setting in platinum or 14k white gold to protect delicate princess corners
Care & Maintenance
Clean with mild dish soap and a soft toothbrush. Avoid ultrasonic cleaners if clarity origin is unknown.
Interesting Facts
The Princess cut was created in the 1960s and is the second most popular diamond shape due to its modern look and high light return.