Non-diamond (Likely Glass or Quartz)
Non-diamond (Likely Glass or Quartz) · Rough / Uncut fragment
Uncut / Raw fragment Cut
Carat
Estimated 10-20 carats (based on visual scale)
Color
Colorless to Light Grey
Clarity
Included (equivalent to I3 or lower)
Shape
Rough / Uncut fragment
Overall Assessment
This specimen is not a diamond. It lacks the refractive index, crystal habit, and luster of a diamond, appearing instead to be a fragment of cullet glass or quartz.
Cut Quality
Uncut / Raw fragment
Brilliance
Low; lacks facet-driven light return
Fire
Minimal to none; low dispersion
Scintillation
Low; light reflects only off random fracture planes
Proportions
Asymmetric / Random
Symmetry
N/A (Rough stone)
Polish
N/A (Natural/Fractured surfaces)
Fluorescence
Inconclusive without UV light
Inclusions
Large internal fractures, veils, and cloudy areas
Blemishes
Conchoidal fractures, sharp edges, and surface pitting
Origin
Terrestrial / Industrial glass byproduct
Treatment Detection
None detected; appears to be raw waste material
Estimated Value
$1 - $5 (Nominal decorative value)
Certification Estimate
Unlikely to be graded as a diamond; GIA/IGI would identify as glass or mineral
Investment Potential
Zero; this is not a gem-quality investment stone
Similar Diamonds
None; characteristics do not match diamond crystal structure
Setting Suggestions
Wire-wrapped for raw specimen jewelry only
Care & Maintenance
Handle with care as edges appear sharp and brittle
Interesting Facts
The conchoidal (shell-like) fracture patterns are a hallmark of glass or silica-rich minerals, not the octahedral cleavage of diamonds.