Not a diamond; this appears to be rough quartz or glass slag based on the conchoidal fracture patterns and lack of crystal habit typical of diamond.
Not a diamond; this appears to be rough quartz or glass slag based on the conchoidal fracture patterns and lack of crystal habit typical of diamond. · Raw, uncut, and broken/fragmented shape with natural or accidental fracture planes
Not Applicable (Uncut rough/fragment) Cut
Carat
Cannot be precisely determined visually without density tests, but likely substantial given the fragment size
Color
Colorless to brownish undertones with iridescence due to surface refraction
Clarity
Included (Contains visible internal fractures, striations, and structural flaws)
Shape
Raw, uncut, and broken/fragmented shape with natural or accidental fracture planes
Overall Assessment
This specimen is definitively not a diamond. It displays physical properties characteristic of rough quartz, glass, or mineral slag, featuring prominent conchoidal fractures and internal striations.
Cut Quality
Not Applicable (Uncut rough/fragment)
Brilliance
Poor to fair due to lack of standard facet alignment and internal fractures
Fire
Minimal dispersion, mostly surface iridescence
Scintillation
Low, lacking proper faceting to create return sparkle patterns
Proportions
Not Applicable
Symmetry
Not Applicable (Irregular fragment)
Polish
Raw fractured surfaces, unpolished
Fluorescence
Unknown (Requires UV testing)
Inclusions
Heavy internal fracturing, cleavage planes, and growth or stress lines
Blemishes
Chips, uneven edges, and surface irregularities from breakage
Origin
Natural mineral or industrial byproduct
Treatment Detection
None apparent, standard raw specimen state
Estimated Value
Minimal to negligible (decorative mineral or glass specimen value only)
Certification Estimate
None; standard gemological laboratories (GIA, AGS) do not issue certificates for non-gem quality quartz or slag fragments
Investment Potential
None
Similar Diamonds
None (no similarity to diamond)
Setting Suggestions
Not recommended for fine jewelry settings due to softness and structural weakness
Care & Maintenance
Store carefully to avoid further chipping or breaking of fragile edges
Interesting Facts
The conchoidal fracture visible clearly indicates brittle material breaking rather than crystalline cleavage planes typical of true gemstones