Natural rough crystal
Natural rough crystal · Uncut octahedral or irregular crystal fragment
Not applicable (Rough, unpolished mineral specimen) Cut
Carat
Estimated 3.5 to 5.0 carats
Color
Near colorless to slight brownish tint (approx. J-K range)
Clarity
I2 to I3 (Included with prominent surface fractures and internal imperfections)
Shape
Uncut octahedral or irregular crystal fragment
Overall Assessment
This is a raw, uncut natural diamond crystal in a rough state, featuring significant internal inclusions and surface irregularities, making it suitable as a mineral specimen or for industrial use rather than fine jewelry.
Cut Quality
Not applicable (Rough, unpolished mineral specimen)
Brilliance
Low due to opaque inclusions, surface wear, and lack of standard faceting
Fire
Minimal dispersion observed in current rough state
Scintillation
Limited to reflective raw cleavage planes and surface facets
Proportions
Not applicable for rough uncut stone
Symmetry
Natural distorted crystal habit, non-symmetrical
Polish
Raw crystal face textures, natural growth striations (trigons potentially present)
Fluorescence
Indeterminate from visual assessment alone
Inclusions
Heavy internal clouding, mineral crystal inclusions, feather fractures
Blemishes
Surface cavities, natural growth marks, chips, and abrasion along edges
Origin
Likely alluvial deposit origin (riverbed rough) given the rounded surface wear
Treatment Detection
None detected; appears completely untreated and in its natural mined state
Estimated Value
Low industrial or mineral specimen value ($50 - $200 USD as a rough specimen)
Certification Estimate
Would not typically receive a standard diamond grading certificate without cutting; report would identify as rough diamond
Investment Potential
Minimal as a gem-grade investment, primarily valued as a geological specimen or for industrial applications
Similar Diamonds
Other industrial-grade alluvial rough diamond crystals
Setting Suggestions
Wire-wrapped pendant setting or custom organic prong mount to showcase the raw stone
Care & Maintenance
Store separately to prevent scratching other stones; avoid harsh chemicals and ultrasonic cleaners due to internal fractures
Interesting Facts
Rough diamonds retain natural growth marks like curved striations and triangular etch pits called trigons