Natural diamond crystal (rough specimen)
Natural diamond crystal (rough specimen) · Rough elongated octahedral/irregular crystal form with natural growth faces and step-like features
Not applicable (uncut rough crystal) Cut
Carat
Estimated 8-12 carats based on visual scale against fingers
Color
Estimated Near Colorless to Faint Yellow (G-K range)
Clarity
Estimated Included (I1-I2) due to prominent dark inclusions and internal fractures
Shape
Rough elongated octahedral/irregular crystal form with natural growth faces and step-like features
Overall Assessment
An intriguing, sizable natural rough diamond crystal displaying characteristic surface features and internal inclusions, offering fascinating potential for mineral display or careful custom faceting.
Cut Quality
Not applicable (uncut rough crystal)
Brilliance
Low to moderate due to rough surface and internal inclusions
Fire
Limited dispersion visible internally through fracture planes
Scintillation
Minimal sparkle; reflects light diffusely off natural crystal faces and internal fractures
Proportions
Natural crystal proportions, depth and table percentages do not apply to rough stones
Symmetry
Natural crystal symmetry showing distorted octahedral growth
Polish
Natural crystal faces (trigons and striations present, unpolished)
Fluorescence
Cannot be determined without UV testing, likely None to Moderate Blue
Inclusions
Large dark carbon spots, clouds, and internal feather fractures visible
Blemishes
Natural surface etch channels, trigons, and rough skin textures
Origin
Alluvial or primary kimberlite pipe deposit, exact country unknown without laser inscription or spectroscopy
Treatment Detection
No signs of artificial treatment; completely natural rough crystal
Estimated Value
Varies widely depending on cutting potential, roughly $1,500 to $4,000 as a rough specimen
Certification Estimate
GIA or similar major lab would issue a Rough Diamond Description Report
Investment Potential
Moderate potential for collectors of mineral specimens or custom lapidaries seeking to maximize yield through cutting
Similar Diamonds
Comparable to industrial or lower-clarity gem-grade rough diamond crystals sold to collectors or custom cutters
Setting Suggestions
Best preserved as a raw mineral specimen in a custom wire-wrap or bezel setting protecting natural edges
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh impacts that could propagate internal natural fractures
Interesting Facts
Rough diamonds preserve the natural geological history of the Earth's mantle before human cutting and polishing