Natural rough diamond crystal
Natural rough diamond crystal · Rough octahedral/irregular crystalline form, unpolished
Not applicable (uncut raw crystal specimen) Cut
Carat
Estimated 3.5 to 4.5 carats based on visual dimensions
Color
K-M range, showing noticeable brownish-yellow body color tint
Clarity
I2 to I3 due to heavy internal clouding, dark carbon spots, and prominent feather inclusions
Shape
Rough octahedral/irregular crystalline form, unpolished
Overall Assessment
An intriguing, untreated natural rough diamond crystal displaying characteristic earth-formed features, heavy inclusions, and a warm body color, ideal for collectors or unique organic jewelry design.
Cut Quality
Not applicable (uncut raw crystal specimen)
Brilliance
Low brilliance due to opacity, heavy inclusions, and lack of faceted optical design
Fire
Minimal dispersion visible primarily near translucent edge fractures
Scintillation
Scattered flash effect from rough cleavage planes rather than structured facet sparkle
Proportions
Natural rough proportions, deep non-standard profile optimized for weight retention
Symmetry
Natural crystalline symmetry, asymmetrical due to raw matrix distortion
Polish
Raw, natural crystal faces with some etched triangular markings (trigons)
Fluorescence
Indeterminate without UV testing, likely Faint to Medium blue if present
Inclusions
Heavy internal inclusions including dark graphite spots, fracture planes, and mineral inclusions
Blemishes
Natural surface pitting, rough skin, abrasion marks, and etch channels
Origin
Likely alluvial African or Brazilian origin, or traditional kimberlite pipe extraction
Treatment Detection
No signs of artificial treatment; completely natural untreated rough specimen
Estimated Value
Industrial to lower-tier gem-grade rough value, approximately $300 - $600 USD total
Certification Estimate
GIA or IDEX certificate for rough diamond identification and origin verification
Investment Potential
Low investment liquidity for jewelry resale; better suited as a mineral specimen or educational display piece
Similar Diamonds
Comparable industrial and lower-clarity jewelry-grade rough diamond crystals
Setting Suggestions
Organic raw-stone pendant mountings, bezel settings in yellow or rose gold to complement the warm body tone
Care & Maintenance
Store separately to prevent scratching other stones; clean gently with warm soapy water and a soft brush
Interesting Facts
Raw diamond crystals often show natural triangular growth marks called trigons on their faces formed by dissolution during ascent