Synthetic Stimulant (likely Glass or Cubic Zirconia)
Synthetic Stimulant (likely Glass or Cubic Zirconia) · Modified Radiant / Octagonal
Fair to Poor (Asymmetrical facets and rounded edges) Cut

Carat
Estimated 2.0 - 5.0 carats (based on scale)
Color
D (Colorless)
Clarity
VVS (Internally clean in appearance)
Shape
Modified Radiant / Octagonal
Overall Assessment
This object is a decorative synthetic simulant, not a natural or lab-grown diamond. The softened edges and lack of optical precision indicate it is likely glass or an inexpensive synthetic crystal intended for costume jewelry.
Cut Quality
Fair to Poor (Asymmetrical facets and rounded edges)
Brilliance
Low (High light leakage)
Fire
High (Exaggerated spectral dispersion characteristic of stimulants)
Scintillation
Low (Lacks the precise light-dark pattern of an ideal diamond)
Proportions
Deep pavilion with thick girdle and uneven crown angles
Symmetry
Poor (Irregular facet alignment)
Polish
Fair (Soft facet junctions suggest low hardness)
Fluorescence
None visible
Inclusions
None visible at this magnification
Blemishes
Rounded facet edges suggesting wear and low hardness
Origin
Factory manufactured (Glass or CZ)
Treatment Detection
Molded or machine-cut synthetic material
Estimated Value
$5 - $50 (Decorative/Costume value)
Certification Estimate
N/A (Not suitable for professional grading as a gemstone)
Investment Potential
None (Depreciating decorative item)
Similar Diamonds
High-dispersion decorative crystals (Swarovski style)
Setting Suggestions
Costume jewelry or display piece
Care & Maintenance
Clean with soft cloth; avoid scratches as material is likely soft
Interesting Facts
The 'rainbow' flashes seen in the image are far more saturated than those found in high-grade natural diamonds, a common sign of glass or high-dispersion stimulants.