Natural Fancy Color Diamond (Likely Type IIb)
Natural Fancy Color Diamond (Likely Type IIb) · Rough / Uncut Crystal (Octahedral habit appearing)
N/A (Rough State) Cut
Carat
Estimated 1.5 - 3.0 carats (uncut)
Color
Fancy Deep Blue (Saturation appears high)
Clarity
Slightly Included (SI) to Included (I1) based on surface-reaching fractures
Shape
Rough / Uncut Crystal (Octahedral habit appearing)
Overall Assessment
An exceptional natural rough specimen of a blue diamond, currently embedded in matrix. Its high color saturation suggests it could produce a world-class 'Fancy Deep' faceted stone, though clarity risks are present.
Cut Quality
N/A (Rough State)
Brilliance
Low (Surface reflection only in rough state)
Fire
None visible in rough state
Scintillation
Low (Localized to surface contact points)
Proportions
Unpolished natural crystal with planar growth faces and trigons
Symmetry
Asymmetric (Natural crystal growth)
Polish
N/A (Natural crystal faces)
Fluorescence
None to Faint (Typical for Type IIb blue diamonds)
Inclusions
Visible internal fractures, possible surface-reaching cleavages, and host rock (matrix) remnants
Blemishes
Natural pitting, surface abrasions, and matrix attachment points
Origin
Likely Cullinan Mine, South Africa (formerly Premier Mine)
Treatment Detection
None detected; color appears natural and consistent with Boron presence
Estimated Value
$150,000 - $400,000+ depending on internal clarity after polishing
Certification Estimate
GIA (Gemological Institute of America) - Fancy Deep Blue
Investment Potential
Very High - Natural blue diamonds have seen the highest percentage of appreciation in the gemstone market.
Similar Diamonds
The Hope Diamond, The Blue Moon of Josephine, The Oppenheimer Blue
Setting Suggestions
Once faceted: Platinum or 18k White Gold to enhance the cool blue tones. Currently: Museum display box or custom claw mount for rough specimens.
Care & Maintenance
Avoid ultrasonic cleaning due to visible internal fractures; clean with lukewarm soapy water and soft brush only.
Interesting Facts
Blue diamonds get their color from trace amounts of Boron; they are semi-conductors of electricity.