Natural rough diamond crystal
Natural rough diamond crystal · Uncut / Raw octahedron or irregular fragment
Not applicable (Rough uncut specimen) Cut
Carat
Estimated 3.5 to 5.0 carats based on visual scale against fingers
Color
Estimated near-colorless to light brown (H-J equivalent when cut)
Clarity
Estimated SI2 to I1 equivalent due to internal fracture lines and surface inclusions
Shape
Uncut / Raw octahedron or irregular fragment
Overall Assessment
An interesting and substantial natural rough crystal with visible internal planes and inclusions; highly suitable for custom lapidary work to extract maximum yield
Cut Quality
Not applicable (Rough uncut specimen)
Brilliance
Low in rough state; will improve dramatically upon proper cutting and polishing
Fire
Minimal dispersion visible in rough form; high potential upon pavilion/crown faceting
Scintillation
Limited flash due to unpolished natural facets and internal fracture light leakage
Proportions
Natural rough geometry; requires professional mapping and sawing for optimal yield
Symmetry
Natural octahedral/fragment symmetry, irregular growth lines visible
Polish
Natural crystal faces (octahedral faces, trigons), unpolished rough state
Fluorescence
Unknown without UV testing, likely inert or faint blue
Inclusions
Feather fractures, internal cleavages, and dark mineral inclusions trapped along growth planes
Blemishes
Natural surface pitting, rough skin, abrasion marks, and potential chip zones
Origin
Likely alluvial or primary kimberlitic origin (African or Canadian source indicators possible)
Treatment Detection
No signs of artificial treatment; completely untreated natural rough specimen
Estimated Value
Varies widely based on internal sawing yield, roughly $1,500 to $4,000 USD in rough state
Certification Estimate
GIA or AGS would issue a rough diamond description report prior to cutting
Investment Potential
Moderate to high speculative value if cut and polished into a marketable gem-quality stone
Similar Diamonds
Comparable to standard industrial-to-gem grade run-of-mine natural 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 prevent scratching other materials; avoid harsh impacts along natural cleavage planes
Interesting Facts
Rough diamonds retain the ancient geological memory of the Earth's mantle, forming over billions of years deep underground