The specimen does not appear to be a diamond; it exhibits characteristics of glass or a silicate mineral such as quartz or beryl. The conchoidal fracture patterns and lack of adamant crystalline structure suggest a non-diamond material.
The specimen does not appear to be a diamond; it exhibits characteristics of glass or a silicate mineral such as quartz or beryl. The conchoidal fracture patterns and lack of adamant crystalline structure suggest a non-diamond material. · Rough / Uncut / Irregular Shard
None (Raw/Uncut specimen) Cut

Carat
Estimated 2.0 - 5.0 carats based on visual size relative to finger.
Color
Colorless with iridescent surface films
Clarity
Translucent with significant internal veining (corresponds to I3 if compared to diamond standards)
Shape
Rough / Uncut / Irregular Shard
Overall Assessment
This item is highly unlikely to be a diamond. It lacks the isometric crystal habit of industrial diamond and displays conchoidal (shell-like) fracturing consistent with glass or silicon dioxide.
Cut Quality
None (Raw/Uncut specimen)
Brilliance
Very Low; lacks internal reflection due to absence of faceting.
Fire
Observed iridescence on surface (thin-film interference) rather than internal spectral dispersion.
Scintillation
None
Proportions
N/A - This is a rough fragment with no geometric facets.
Symmetry
Poor / Asymmetrical
Polish
Natural surface; no mechanical polish.
Fluorescence
Indeterminable from static image; likely none.
Inclusions
Heavy internal fractures, cleavage planes, and fluid-like inclusions.
Blemishes
External dirt, conchoidal chips, and surface abrasions.
Origin
Terrestrial mineral or anthropogenic (man-made glass shard).
Treatment Detection
None detected; appears to be raw waste material or natural low-grade mineral.
Estimated Value
Minimal decorative value ($0.50 - $5.00), assuming it is a glass fragment or common quartz.
Certification Estimate
Likely uncertifiable as a diamond by GIA/IGI; would be identified as glass or mineral specimen.
Investment Potential
None; lacks the rarity or physical properties of gemstone-grade material.
Similar Diamonds
Rough industrial Boart or low-quality quartz crystals.
Setting Suggestions
Wire wrapping for decorative/novelty purposes only.
Care & Maintenance
Avoid high heat or pressure as internal fractures make it prone to shattering.
Interesting Facts
The rainbow effect seen on the surface is likely due to 'Tarnish' or a thin layer of oxidation/oil on a fracture plane.