Probable Rough Quartz or Slag Glass (Not a Diamond)
Probable Rough Quartz or Slag Glass (Not a Diamond) · Rough / Uncut Elongated Shard
Uncut / Natural state Cut
Carat
Estimated 5.0 - 15.0 carats (based on finger scale)
Color
Colorless to Pale Yellow (Near-colorless equivalent)
Clarity
Included (I1-I2 equivalent)
Shape
Rough / Uncut Elongated Shard
Overall Assessment
The specimen lacks the adamantine luster, specific gravity, and crystal habit of a natural diamond. It appears to be a shard of quartz or silicate glass.
Cut Quality
Uncut / Natural state
Brilliance
Low; lacking internal light reflection
Fire
None detected; lack of dispersion
Scintillation
Minimal; surface-only glints
Proportions
Non-standard; elongated fractured geometry
Symmetry
Poor / Asymmetrical
Polish
Poor / Natural surface texture
Fluorescence
Indeterminable from image
Inclusions
Large internal fractures, possible feathers, and dark mineral spots
Blemishes
Severe surface abrasions, conchoidal fractures, and rough edges
Origin
Likely alluvial or secondary deposit if natural mineral; otherwise industrial byproduct
Treatment Detection
None visible; appears to be raw material
Estimated Value
Minimal (low-cost specimen value)
Certification Estimate
N/A - Likely not diamond; GIA/IGI would identify as non-diamond
Investment Potential
None
Similar Diamonds
None; lacks the crystalline structure of a diamond macle or octahedron
Setting Suggestions
Not recommended for fine jewelry; specimen wrap only
Care & Maintenance
Avoid impact; handle as a fragile specimen
Interesting Facts
The conchoidal (shell-like) fracture patterns on the surface are more characteristic of glass or quartz than the octahedral cleavage of a diamond.