Not a diamond; this item appears to be a cabochon-cut colored gemstone, likely lapis lazuli or blue sapphire, set in a gold bezel mount.
Not a diamond; this item appears to be a cabochon-cut colored gemstone, likely lapis lazuli or blue sapphire, set in a gold bezel mount. · Oval Cabochon
Good (smooth, well-rounded cabochon polish with symmetrical oval proportions). Cut
Carat
Cannot be precisely determined visually while mounted, estimated around 2.0 to 3.0 carats based on bezel dimensions.
Color
Deep royal blue / opaque dark blue with potential metallic flecks characteristic of lapis lazuli.
Clarity
Opaque (not applicable for standard diamond clarity grading; contains natural matrix or mineral inclusions typical of lapis lazuli).
Shape
Oval Cabochon
Overall Assessment
An attractive, smooth oval cabochon blue gemstone (likely lapis lazuli) securely set in a yellow metal bezel, serving as a classic decorative jewelry component rather than a diamond.
Cut Quality
Good (smooth, well-rounded cabochon polish with symmetrical oval proportions).
Brilliance
Vitreous to waxy luster typical of opaque cabochon gemstones rather than diamond brilliance.
Fire
None (opaque stones do not exhibit spectral dispersion or fire).
Scintillation
Low scintillation due to opaque and non-faceted cabochon nature.
Proportions
Medium-high dome profile with uniform bezel setting height.
Symmetry
Good symmetrical oval shape with a smooth, even dome.
Polish
Good, high-luster polish across the curved cabochon surface.
Fluorescence
None to inert under normal visual inspection.
Inclusions
Natural matrix inclusions (potentially pyrite flecks) typical of genuine lapis lazuli.
Blemishes
No major surface scratches or abrasions visible at this resolution.
Origin
Likely natural gemstone origin (such as Badakhshan, Afghanistan for lapis lazuli, or Sri Lanka if sapphire).
Treatment Detection
Standard gemstone testing (microscopy/spectroscopy) would be required to rule out dyeing, impregnation, or stabilization.
Estimated Value
Moderate retail value, highly dependent on the exact gemstone material (e.g., high-grade Afghan lapis vs. blue chalcedony or synthetic spinel).
Certification Estimate
Gemological laboratories such as GIA or SSEF would issue a colored stone identification report rather than a diamond dossier.
Investment Potential
Collector or decorative value rather than traditional diamond investment grade.
Similar Diamonds
Not applicable as this is a colored cabochon gemstone, not a diamond.
Setting Suggestions
Currently mounted in a yellow gold bezel setting, which complements deep blue opaque gemstones exceptionally well.
Care & Maintenance
Clean with a soft damp cloth; avoid harsh ultrasonic cleaners, steam, and prolonged exposure to acids or chemicals, especially if identified as lapis lazuli.
Interesting Facts
Cabochon-cut opaque blue stones have been prized in jewelry since ancient civilizations, often used in signet rings, cufflinks, and brooches.