Not a diamond; this appears to be an optical glass prism or coated quartz crystal displaying internal reflections and thin-film interference colors.
Not a diamond; this appears to be an optical glass prism or coated quartz crystal displaying internal reflections and thin-film interference colors. · Irregular multifaceted block / prism
Not applicable Cut

Carat
Not applicable (mineral specimen/glass object, measured in grams rather than carats)
Color
Fancy multicolored (due to coating and internal light refraction)
Clarity
Not applicable to gem-grade diamonds
Shape
Irregular multifaceted block / prism
Overall Assessment
An interesting optical prism or coated quartz crystal rather than a diamond, notable for its striking rainbow interference colors and internal reflections.
Cut Quality
Not applicable
Brilliance
High internal reflection and spectral dispersion
Fire
Extremely high spectral dispersion due to prism effect and possible coating
Scintillation
Dynamic play of light driven by movement against light sources
Proportions
Not applicable to standard diamond cut standards
Symmetry
Asymmetrical / handmade optical geometry
Polish
Smooth optical polish on visible facets
Fluorescence
Not applicable
Inclusions
Internal fracture planes and trapped air bubbles typical of glass or untreated natural quartz
Blemishes
Surface chips and abrasion near edges
Origin
Man-made optical glass or treated quartz
Treatment Detection
Surface coating visible via rainbow thin-film interference patterns
Estimated Value
Nominal decorative or educational value
Certification Estimate
Not gradable by standard diamond laboratories (GIA, AGS, IGI)
Investment Potential
None; ornamental or novelty value only
Similar Diamonds
None, as this is fundamentally not a diamond
Setting Suggestions
Not recommended for jewelry due to material softness and fragility
Care & Maintenance
Handle with care to avoid chipping; clean with mild soap and water, avoid harsh chemicals
Interesting Facts
Demonstrates spectacular optical physics phenomena including refraction, reflection, and thin-film interference