Glass Fragment / Industrial Slag (Simulant)
Glass Fragment / Industrial Slag (Simulant) · Rough / Irregular Fragment
None / Uncut (Conchoidal fractures present) Cut
Carat
Estimated 20-50 carats based on typical fragment size
Color
Colorless with high dispersion (Spectral Rainbows)
Clarity
I3 / Included (Visible internal fractures and flow lines)
Shape
Rough / Irregular Fragment
Overall Assessment
This object is a piece of transparent glass or industrial byproduct rather than a diamond. It lacks the crystal structure, facet arrangement, and lustre characteristic of a gemstone.
Cut Quality
None / Uncut (Conchoidal fractures present)
Brilliance
Low (Low refractive index compared to diamond)
Fire
High (Localized thin-film interference/diffraction rainbows)
Scintillation
Poor (Lacks faceted reflections)
Proportions
N/A (Non-geometric shape)
Symmetry
Poor / Asymmetrical
Polish
Poor / Raw surface
Fluorescence
Indeterminate; displays strong spectral dispersion light-splitting
Inclusions
Large internal cleavage planes, flow lines, and bubbles typical of glass
Blemishes
Severe pitting, scratching, and shell-like conchoidal chipping
Origin
Man-made industrial glass or common silica-based slag
Treatment Detection
Evidence of rapid cooling and mechanical fracturing
Estimated Value
Minimal / Decorative value only ($1 - $10)
Certification Estimate
N/A (Would likely be rejected by GIA/AGS as non-diamond)
Investment Potential
None
Similar Diamonds
None (Functionally more similar to decorative crystal or glass cullet)
Setting Suggestions
Wire wrapping or decorative display only
Care & Maintenance
Handle with caution; edges appear jagged and sharp
Interesting Facts
The rainbow effect seen is likely due to thin-film interference on a fracture surface rather than internal fire.