Natural rough crystal
Natural rough crystal · Rough elongated crystal (uncut octahedral/twinned formation)
Not applicable (rough, uncut specimen) Cut
Carat
Estimated 3.5 - 5.0 carats in rough form
Color
Near-colorless to light yellow/brown tint (approx. G-I range)
Clarity
Included (I1-I2 estimated due to visible internal fracturing and feathering)
Shape
Rough elongated crystal (uncut octahedral/twinned formation)
Overall Assessment
An intriguing, sizable natural rough diamond crystal exhibiting classic growth lines and geological features, holding significant potential for a custom-cut faceted gemstone.
Cut Quality
Not applicable (rough, uncut specimen)
Brilliance
Limited in rough form; internal light reflection is scattered by surface irregularities
Fire
Minimal dispersion visible on rough surfaces; high potential once cut and polished
Scintillation
Low in rough state; will require faceting to exhibit proper light play
Proportions
Natural crystal habit; depth and table percentages do not apply to rough stones
Symmetry
Natural asymmetrical rough growth patterns
Polish
Natural crystal face texture with striations (trigons potentially present)
Fluorescence
Indeterminate without UV testing (likely Faint to Medium Blue)
Inclusions
Visible internal feathers, clouds, and potential mineral inclusions typical of rough diamond formation
Blemishes
Natural surface pitting, rough skin, growth lines, and possible cavities
Origin
Likely alluvial or primary kimberlite pipe deposit (Africa, Canada, or Russia)
Treatment Detection
No signs of artificial treatment; completely natural untreated rough crystal
Estimated Value
Variable based on cutting yield; estimated at $1,500 - $3,000 in rough state
Certification Estimate
GIA would likely issue a Diamond Rough Report or Dossier upon cutting
Investment Potential
High speculative value depending on the master cutter's ability to maximize yield and clarity post-cutting
Similar Diamonds
Other natural gem-quality rough diamond crystals of comparable weight and clarity
Setting Suggestions
Can be displayed raw in an organic, rustic bezel setting, or cut into an elongated shape like an Emerald or Oval cut
Care & Maintenance
Handle with care to prevent chipping along natural cleavage planes; clean with warm soapy water and a soft brush
Interesting Facts
Rough diamonds showcase the natural octahedral or distorted crystal growth of carbon under extreme mantle pressure