Natural rough mineral crystal (likely quartz or glass-like material, not a gem-quality diamond)
Natural rough mineral crystal (likely quartz or glass-like material, not a gem-quality diamond) · Irregular rough crystal / Uncut natural fragment
Not applicable (Rough, unpolished natural specimen) Cut
Carat
Estimated around 3.5 to 5.0 carats equivalent based on visual scale in hand
Color
Colorless with strong iridescent thin-film interference / surface play of color
Clarity
I3 (Heavy inclusions, prominent internal fractures, and dark fissure fillings)
Shape
Irregular rough crystal / Uncut natural fragment
Overall Assessment
Visual analysis indicates this specimen is a rough, heavily fractured mineral crystal or quartz fragment rather than a diamond. It displays prominent internal cleavage and dark inclusions with a distinct iridescent surface sheen. It holds no gemological or commercial value as a gemstone.
Cut Quality
Not applicable (Rough, unpolished natural specimen)
Brilliance
Low brilliance due to opacity, internal fracturing, and lack of standard facet alignment
Fire
Exhibits surface-level spectral dispersion (rainbow effect) due to thin-film interference rather than internal facet dispersion
Scintillation
Poor scintillation; patchy and scattered light reflection confined to fractured planes
Proportions
Non-standard, completely organic rough nugget proportions
Symmetry
Asymmetrical / Natural rough formation
Polish
Raw, unpolished natural crystal surfaces with noticeable fracture planes
Fluorescence
Strong iridescent surface reflection under ambient light
Inclusions
Prominent dark matrix inclusions trapped along deep internal cleavage planes and fractures
Blemishes
Natural surface etching, rough edges, and prominent surface-reaching fractures
Origin
Natural terrestrial mineral formation or industrial byproduct (depending on exact material composition)
Treatment Detection
Potential natural tectonic stress fracturing with secondary mineral infill or surface coating effects
Estimated Value
Minimal nominal value as a mineral specimen; negligible gem market value
Certification Estimate
Uncertifiable as a diamond by major labs (GIA, AGS, IGI); likely identified as quartz or slag glass upon testing
Investment Potential
No investment or resale potential in the gemstone market
Similar Diamonds
None; this specimen does not share characteristics with gem-grade diamonds
Setting Suggestions
Wire-wrapping or organic bezel setting if desired to preserve the raw, rustic appearance
Care & Maintenance
Handle with care due to structural weakness along prominent internal fracture planes; avoid ultrasonic cleaners
Interesting Facts
The strong rainbow sheen visible on the surface is typically caused by light diffraction through microscopic micro-fractures or thin surface coatings rather than traditional diamond fire