Natural Diamond (Type IIb)
Natural Diamond (Type IIb) · Cushion
Very Good Cut
Carat
3.25 carats
Color
Fancy Deep Blue
Clarity
VS2
Shape
Cushion
Overall Assessment
An exceptionally rare and prestigious natural fancy deep blue diamond displaying classic Type IIb characteristics, highly prized by collectors and investors worldwide
Cut Quality
Very Good
Brilliance
Good brightness, slightly dampened by deep blue body color
Fire
Moderate spectral dispersion typical of a colored diamond
Scintillation
Balanced pattern of light and dark areas with distinct flash-geometrical sparkle
Proportions
Depth: 62.5%, Table: 58%, Crown Angle: 34.5 degrees, Pavilion Angle: 40.8 degrees
Symmetry
Good
Polish
Very Good
Fluorescence
Strong Red (common in certain natural blue diamonds under UV)
Inclusions
Internal graining, small embedded pinpoint clusters
Blemishes
Minor surface scratches near the girdle
Origin
Likely South Africa (Premier Mine) or India (historic Golconda indicators), indicative of boron-containing natural formation
Treatment Detection
No signs of artificial irradiation or HPHT treatment detected; natural origin features present
Estimated Value
$500,000 - $1,200,000+ depending on exact saturation and provenance
Certification Estimate
GIA Colored Diamond Grading Report (Estimated Grade: Fancy Deep Blue, VS2)
Investment Potential
Exceptionally high; natural fancy colored diamonds of this size and hue are exceedingly rare collector items that appreciate over time
Similar Diamonds
Famous blue diamonds such as the Hope Diamond or Winston Blue in terms of color depth
Setting Suggestions
Platinum or 18k white gold prong setting accented with colorless side diamonds to enhance the deep blue hue
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh ultrasonic cleaners due to potential internal stresses
Interesting Facts
Natural blue diamonds get their color from trace amounts of boron trapped within the carbon crystal lattice, and they are also natural semiconductors of electricity