Possible Simulated (Cubic Zirconia/Moissanite) or Natural Quartz based on extreme dispersion and surface texture
Possible Simulated (Cubic Zirconia/Moissanite) or Natural Quartz based on extreme dispersion and surface texture · Radiant or Modified Cushion Cut
Fair to Good Cut
Carat
Estimated 1.5 - 2.5 carats based on visual scale
Color
D-F (Colorless)
Clarity
VS1 to VS2 (subject to surface-reaching fractures)
Shape
Radiant or Modified Cushion Cut
Overall Assessment
The specimen exhibits characteristics of a diamond simulant, such as Cubic Zirconia, due to the rounded facet junctions and high spectral fire. However, if it is a natural stone, it requires professional polishing to repair surface damage.
Cut Quality
Fair to Good
Brilliance
High internal reflections, though partially obscured by surface dust
Fire
Extremely high (Rainbow dispersion characteristic of Moissanite or CZ)
Scintillation
Strong, with large blocks of color dispersion rather than pin-fire sparkle
Proportions
High crown with a deep pavilion, typical of older or modified square cuts
Symmetry
Fair; facets appear slightly asymmetrical
Polish
Good; visible surface abrasions
Fluorescence
Non-detectable in current lighting
Inclusions
Potential internal fractures (feathers) and surface-reaching chips
Blemishes
Chipping along the girdle and facet junctions, consistent with softer gemstone simulants
Origin
Synthetic/Lab-manufactured simulant
Treatment Detection
None apparent; possible coating for enhanced reflection
Estimated Value
$10 - $50 (if simulant); $1,500 - $3,000 (if low-grade natural diamond)
Certification Estimate
Likely uncertified or localized lab (EGL/IGS) due to facet wear
Investment Potential
Low; shows significant wear and likely non-precious composition
Similar Diamonds
Modified Radiant cut Moissanite
Setting Suggestions
Bezel setting recommended to protect fragile edges and hide girdle chips
Care & Maintenance
Clean with warm soapy water; avoid ultrasonic cleaners if internal fractures are present
Interesting Facts
The intense rainbow 'fire' is often a diagnostic feature of diamonds with high dispersion, but excessive fire often indicates a simulant.