Natural (Rough Crystal / Uncut Specimen)
Natural (Rough Crystal / Uncut Specimen) · Rough irregular crystal / tabular form
Not applicable (Rough, unpolished crystal) Cut
Carat
Estimated 2.50 to 3.50 carats based on visual scale
Color
Near-colorless to light brown tint (Estimated H-J range)
Clarity
Included / Industrial to lower ornamental grade (Estimated I1-I2)
Shape
Rough irregular crystal / tabular form
Overall Assessment
An authentic, untreated rough diamond crystal holding significant educational and collector appeal as an un-faceted natural specimen rather than a finished gemstone
Cut Quality
Not applicable (Rough, unpolished crystal)
Brilliance
Low to moderate due to rough unpolished surface and internal inclusions
Fire
Minimal dispersion visible through rough exterior
Scintillation
Poor, lacks standard facets to reflect and refract light dynamically
Proportions
Natural crystal dimensions; non-standard proportions
Symmetry
Natural crystal asymmetry
Polish
Raw, natural crystal faces (trigons and etching features visible)
Fluorescence
Indeterminate from visual inspection alone, likely none to faint
Inclusions
Abundant internal inclusions, micro-fractures, and cloudiness
Blemishes
Rough surface pitting, natural surface graining, and matrix residue
Origin
Alluvial deposit or primary kimberlitic/lamproitic pipe origin
Treatment Detection
No signs of artificial enhancement; completely untreated natural rough stone
Estimated Value
Low market value as a gemstone; primarily valued as a raw mineral specimen or for industrial use
Certification Estimate
Typically sold via rough diamond tenders or specialized geological certificates rather than standard GIA report grades
Investment Potential
Minimal as a traditional investment, but appealing to mineral collectors and educational displays
Similar Diamonds
Other alluvial rough diamond crystals of comparable size and clarity
Setting Suggestions
Wire-wrapped pendant setting to preserve the raw, organic aesthetic of the natural crystal
Care & Maintenance
Store separately to avoid scratching other materials; clean gently with warm soapy water and a soft brush
Interesting Facts
Rough diamonds straight from the earth often feature natural growth marks called trigons (triangular depressions) on their crystal faces