Natural Diamond
Natural Diamond · Oval Brilliant
Good Cut
Carat
4.20 carats (as specified)
Color
H-I (Near Colorless)
Clarity
VS2-SI1
Shape
Oval Brilliant
Overall Assessment
A significant and impressive natural diamond. While the photography shows some typical 'bow-tie' extinction, the overall size and brightness make it a premium piece for high-end jewelry.
Cut Quality
Good
Brilliance
Strong white light return across the table, with some extinction visible near the bow-tie area.
Fire
Moderate spectral flashes under direct lighting.
Scintillation
Defined pattern of light and dark areas; active sparkle when tilted.
Proportions
Moderate to Deep; slightly elongated length-to-width ratio; crown height appears standard for a larger oval cut.
Symmetry
Good
Polish
Very Good
Fluorescence
None to Faint
Inclusions
Minor internal crystals and needles visible under magnification, characteristic of natural stone.
Blemishes
Minor surface graining or polishing lines, typical for a stone of this scale.
Origin
Likely Earth-mined, potentially African or Russian origin based on typical supply chains for large ovals.
Treatment Detection
No visual evidence of HPHT or fracture filling; appears to be natural origin and color.
Estimated Value
$45,000 - $65,000 USD (Wholesale Market Estimate)
Certification Estimate
GIA (Gemological Institute of America) would be the preferred lab for a stone of this size; Estimated Grade: 4.20ct, I, VS2.
Investment Potential
High due to the rarity of diamonds exceeding the 4-carat mark, provided a GIA certificate is present.
Similar Diamonds
4.0-4.5 carat ovals with near-colorless grades and VS-SI clarity.
Setting Suggestions
Platinum or 18k White Gold six-prong solitaire to secure the weight, or a delicate halo to enhance the face-up size.
Care & Maintenance
Ultrasonic cleaning is safe; avoid heavy impacts on the girdle. Professional inspection every 6 months recommended due to high carat weight.
Interesting Facts
Large oval diamonds are known for their slimming effect on the finger and can appear larger than round diamonds of the same weight.
Notes
4,20 karat