Natural rough diamond crystal
Natural rough diamond crystal · Rough octahedral/elongated crystal form, unpolished
Not applicable (uncut, raw crystal specimen) Cut
Carat
Estimated 3.5 to 5.0 carats based on visual scale against fingers
Color
Estimated near-colorless to faint yellow (approx. G-K range)
Clarity
Estimated SI1 to SI2 based on visible internal feathers and inclusions in the raw matrix
Shape
Rough octahedral/elongated crystal form, unpolished
Overall Assessment
An impressive, character-rich natural rough diamond crystal offering potential for either a unique raw jewelry piece or a fine custom-faceted gemstone upon professional cutting.
Cut Quality
Not applicable (uncut, raw crystal specimen)
Brilliance
Low in rough form; will exhibit high brilliance only after professional cutting and faceting
Fire
Subdued in rough state; prominent dispersion will appear post-cutting
Scintillation
Limited flash of light from natural crystal faces; true scintillation requires faceted surfaces
Proportions
Natural rough proportions, asymmetrical due to natural geological formation
Symmetry
Natural crystal growth symmetry showing distinct natural faces and strictions
Polish
Natural unpolished crystal faces with typical natural triangular growth features (trigons)
Fluorescence
Cannot be determined definitively without UV testing, likely Faint to Medium Blue
Inclusions
Internal cleavage planes, feathers, and tiny mineral crystals typical of rough diamond
Blemishes
Natural surface pitting, rough skin, and possible minor abrasion from extraction
Origin
Likely alluvial or primary kimberlitic pipe deposit (e.g., South Africa, Canada, or Russia)
Treatment Detection
No signs of treatment; completely untreated natural rough stone
Estimated Value
Varies widely as a mineral specimen; rough value estimated between $1,500 to $4,000 depending on cutting yield
Certification Estimate
GIA or IGI would classify this as a natural rough diamond specimen
Investment Potential
Moderate value as a collectible mineral specimen or custom-cut investment piece
Similar Diamonds
Comparable to unassorted run-of-mine natural industrial/gem rough parcels
Setting Suggestions
Can be mounted raw in an organic/rustic bespoke pendant or ring setting using yellow gold or platinum prongs
Care & Maintenance
Store separately to avoid scratching other jewelry; clean gently with warm soapy water and a soft brush
Interesting Facts
Rough diamonds like this are billions of years old, formed deep within the Earth's mantle under extreme pressure and heat