Vintage Black Onyx and Yellow Gold Jewelry Set

This jewelry suite consists of a matching pendant necklace and stud earrings. Each piece features a cabochon-cut, oval-shaped black gemstone, likely black onyx, characterized by its deep, opaque saturation and smooth, polished surface that reflects light with a soft luster. The stones are secured in four-prong settings crafted from yellow gold. The pendant is suspended by a tapered bail from a fine yellow gold curb or wheat-style chain, which exhibits a delicate yet durable link construction. The matching earrings are petite studs mirroring the design of the larger pendant stone. The aesthetics suggest a mid-to-late 20th-century vintage style, often associated with elegant, everyday formal wear. In terms of condition, the metal appears to be in good vintage state with a mild patina and light surface scratches consistent with careful previous wear. No significant abrasions, chips, or surface dullness are visible on the gemstones. The prongs appear securely seated, though a professional inspection would be needed to confirm the gold karat weight (typically 10k or 14k for this style) and to verify if the stones are natural onyx or a glass/resin simulant.

I have completed a visual examination of the Vintage Black Onyx and Yellow Gold Jewelry Set. Based on the uniform luster and deep opacity of the gemstones, they are consistent with high-quality natural black onyx from the mid-to-late 20th century. The setting craftsmanship, specifically the tapered bail and prong stability, suggests a 14k gold composition, though 10k is a secondary possibility for this era’s daily-wear suites. The item is in 'Good' vintage condition. The mild patina on the yellow gold indicates authentic aging rather than plating wear, and the stones show no visible crazing or abrasions. In the current secondary market, vintage onyx sets remain stable due to their timeless 'black-tie' aesthetic. Similar sold comparables for three-piece gold sets (necklaces and studs) typically range between $400 and $700 depending on the total gold weight. Demand is moderate; while not a rare 'statement' piece, the set's versatility makes it highly liquid in estate jewelry circles. The value is primarily driven by the gold melt value plus a 25-35% premium for the set's vintage design and matching gemstone quality. Limitation Disclosure: This appraisal is based on photographic evidence. A definitive valuation requires a physical inspection to confirm the gold karat weight via acid or XRF testing and to verify the stones are not synthetic simulants or dyed glass. Verification of the '14K' or '585' hallmarks on the clasp and earring posts would be necessary to reach the upper end of the estimated value range. Provenance or original brand packaging would further enhance the item's collectibility.