Likely Non-Diamond (Glass or Slag)
Likely Non-Diamond (Glass or Slag) · Rough / Irregular / Amorphous
Poor / Uncut / Raw Cut
Carat
Estimated 20-50 carats based on visual volume
Color
Colorless with blue secondary tint from background
Clarity
Equivalent to Included (I3) or Industrial Grade
Shape
Rough / Irregular / Amorphous
Overall Assessment
The specimen displays physical characteristics inconsistent with diamond, most notably the swirl-like fracture patterns and lack of crystalline structure.
Cut Quality
Poor / Uncut / Raw
Brilliance
Low; lacks diamond-like refractive returns
Fire
Very Low; no significant dispersion visible
Scintillation
None; surface reflections only
Proportions
Non-standard; lack of facets to calculate angles
Symmetry
Poor / Asymmetrical
Polish
Poor / Vitreous luster with dull patches
Fluorescence
Indeterminate based on image
Inclusions
Conchoidal fractures, swirl marks, and internal stress lines
Blemishes
Deep chips, surface abrasions, and jagged edges
Origin
Man-made industrial glass or byproduct
Treatment Detection
N/A; material appears to be a synthetic melt
Estimated Value
Minimal; ornamental or decorative glass value
Certification Estimate
Unlikely to be graded by GIA as a gemstone; status as glass
Investment Potential
None; material has negligible resale value as a gemstone
Similar Diamonds
None; resembles sea glass or quartz cullet
Setting Suggestions
Wire wrap or epoxy-based decorative mounting only
Care & Maintenance
Avoid impact; likely brittle and prone to shattering
Interesting Facts
The curved, shell-like (conchoidal) fractures are a diagnostic signature of glass.