Natural
Natural · Round Brilliant
Fair to Good Cut
Carat
4.20 Carats (as stated)
Color
J-K (Estimated)
Clarity
I1-I2 (Estimated)
Shape
Round Brilliant
Overall Assessment
A large, substantial natural diamond with significant visible inclusions that impact its transparency and brilliance, best suited for someone prioritizing size over clarity.
Cut Quality
Fair to Good
Brilliance
Moderate; light return is affected by internal inclusions
Fire
Moderate spectral dispersion
Scintillation
Visible contrast between facets, though somewhat muted by clarity characteristics
Proportions
Standard round brilliant distribution, appearing slightly deep
Symmetry
Good
Polish
Good
Fluorescence
Indeterminable from photo
Inclusions
Visible dark crystal inclusions and prominent feathers/cleavage planes visible to the naked eye
Blemishes
Possible surface reaching fractures and minor abrasions
Origin
Likely African or Russian mines based on size and characteristics
Treatment Detection
No obvious signs of treatment, though large natural feathers are present
Estimated Value
$15,000 - $25,000 USD (wide range due to clarity impact on structural integrity)
Certification Estimate
Likely GIA or IGI; estimated grade of K Color / I1 Clarity
Investment Potential
Low to Moderate; large size offers some value, but low clarity limits appreciation compared to investment-grade stones
Similar Diamonds
Large carat weight SI2-I2 natural round diamonds
Setting Suggestions
A multi-prong platinum or 18k white gold basket setting to provide maximum security for a large stone
Care & Maintenance
Avoid ultrasonic cleaners due to large internal feathers; clean with soft brush and mild soap
Interesting Facts
A 4.20 carat diamond is in the top 1% of all gem-quality diamonds by weight
Notes
4,20 Karat natural Diamond