Cabochon Moonstone and Diamond Halo Pendant Necklace

This fine jewelry piece features a round, sky-blue to milky-white cabochon-cut gemstone, likely a moonstone or chalcedony, measuring approximately 6-8mm in diameter. The center stone is bordered by a pave-set diamond halo, which enhances its radiance. The pendant includes a decorative tapered bail also set with small accent diamonds, totaling an estimated 0.15-0.25 carats for the entire piece. The setting and the delicate cable link chain are crafted from 14k or 18k white gold or platinum, based on the bright silver-toned finish. The craftsmanship suggests a contemporary design, likely from the late 20th to early 21st century. The chain appears thin and refined, indicating high-quality jeweler construction. While specific maker's marks are not visible in the provided image, the precision of the stone setting indicates professional quality. Regarding condition, the metal shows a high polish with minimal apparent surface scratches or tarnish. The central cabochon maintains a smooth surface without visible chips or abrasions, and the diamonds appear securely seated in their prongs.

I have conducted a visual examination of the Cabochon Moonstone and Diamond Halo Pendant. The central stone exhibits a desirable adularescence characteristic of high-quality moonstone. The pave-set diamond halo and bail appear to be of G-H color and VS-SI clarity, totaling approximately 0.20 carats. The metal’s luster and lack of tarnish suggest 14k or 18k white gold. The piece is in excellent contemporary condition with no visible abrasions to the central cabochon or loosening of the prongs. Current market conditions for mid-range designer-style fine jewelry remain stable. Moonstone has seen a resurgence in demand among collectors seeking ethereal, 'bohemian-luxe' aesthetics. Comparable pieces from specialized boutiques typically retail in the $1,000 to $1,500 range depending on the specific gold weight and brand provenance. The value is bolstered by the clean execution of the diamond halo, which adds significant 'fire' to contrast the moonstone’s soft glow. Please note significant limitations: This appraisal is based solely on high-resolution imagery. Without physical inspection, I cannot definitively confirm metal purity via acid testing or XRF, nor can I distinguish between natural moonstone and high-grade synthetic equivalents or chalcedony. To provide a certified insurance appraisal, I would require an in-person examination to weigh the metal, verify diamond quality under 10x magnification, and check for hallmarks or maker's marks on the clasp or pendant reverse. Testing with a refractometer and polariscope would also be necessary to confirm the gemstone’s mineral identity and natural origin.