Natural Diamond
Natural Diamond · Marquise
Very Good Cut
Carat
Estimated 0.75 - 1.00 carats for the center stone
Color
Estimated G-I (near colorless)
Clarity
Estimated SI1 - SI2 (slightly included)
Shape
Marquise
Overall Assessment
A classic, bold mid-to-late 20th-century ring featuring a prominent marquise-cut natural diamond accented by channel-set side stones in a substantial white metal mounting, offering timeless vintage appeal and solid everyday durability
Cut Quality
Very Good
Brilliance
Good white light return, though slightly interrupted by the center inclusion profile
Fire
Moderate spectral dispersion typical of well-faceted marquise cuts
Scintillation
Active flash pattern across the wing facets with minimal bow-tie effect
Proportions
Standard classic marquise proportions with a balanced length-to-width ratio, moderate table and acceptable pavilion depth
Symmetry
Good to Very Good, with well-aligned tips and wings
Polish
Good, showing standard facet line crispness
Fluorescence
Faint to Medium (typical for natural diamonds of this era)
Inclusions
Minor feather and crystal inclusions visible under magnification, characteristic of SI clarity
Blemishes
Minor natural surface blemishes typical of everyday wear on a vintage or pre-owned mounting
Origin
Natural earth-mined origin, likely dating to a late 20th-century jewelry design era (1980s-1990s)
Treatment Detection
No obvious signs of fracture filling or laser drilling; appears untreated
Estimated Value
$2,500 - $4,500 USD depending on exact carat weight, color, and clarity confirmation
Certification Estimate
GIA or IGI could grade this; likely to receive a standard commercial grading report
Investment Potential
Standard retail jewelry retention value rather than high-growth investment asset; typical of commercial-grade estate jewelry
Similar Diamonds
Standard commercial-grade marquise-cut center stones featured in bypass or chunky channel-set cocktail and engagement rings from the late 20th century
Setting Suggestions
Heavy channel-set band with V-prongs protecting the vulnerable pointed tips of the marquise cut, paired with 14k or 18k white gold or platinum
Care & Maintenance
Regular professional cleaning, check the protective V-prongs annually to ensure the pointed tips remain secure against impact
Interesting Facts
The marquise cut was originally commissioned by King Louis XV of France to resemble the smile of the Marquise de Pompadour