Natural rough diamond crystal
Natural rough diamond crystal · Rough octahedral/irregular crystalline form
Not applicable (uncut rough crystal) Cut
Carat
Estimated 1.5 to 2.5 carats
Color
Near-colorless to faint yellow (approx. K-M range)
Clarity
Included (I1-I3) due to numerous internal inclusions and cloudy patches
Shape
Rough octahedral/irregular crystalline form
Overall Assessment
An interesting and tactile specimen of natural diamond rough, best suited for mineral collections or raw-stone jewelry rather than standard cutting and polishing
Cut Quality
Not applicable (uncut rough crystal)
Brilliance
Low due to lack of faceting and rough surface texture
Fire
Minimal due to unpolished and irregular surface
Scintillation
Poor, light scatters internally without standard facet reflections
Proportions
Natural rough proportions, requires professional mapping for cutting
Symmetry
Natural octahedral/distorted crystalline symmetry
Polish
Natural unpolished crystal faces (trigons and striations visible)
Fluorescence
Cannot be definitively determined without UV testing, likely inert to medium
Inclusions
Heavy internal cloudiness, feather fractures, and potential mineral inclusions
Blemishes
Natural surface pitting, rough skin, and irregular growth features
Origin
Alluvial or primary kimberlitic pipe deposit (Africa, Canada, or Russia)
Treatment Detection
No signs of artificial treatment; completely untreated natural rough
Estimated Value
Nominal value based on industrial or low-grade specimen rough, typically a few hundred dollars
Certification Estimate
GIA or IGI would issue a rough diamond report or origin report if requested
Investment Potential
Low investment potential for jewelry use, collectible as a mineral specimen only
Similar Diamonds
Other industrial or specimen-grade rough diamond crystals of similar size and clarity
Setting Suggestions
Raw mineral jewelry setting using a basket, wire-wrap, or prong setting to preserve the natural crystal form
Care & Maintenance
Store separately to prevent scratching other stones; clean gently with warm soapy water and a soft brush
Interesting Facts
Rough diamonds display natural growth marks called trigons (triangular depressions) on their crystal faces