Vintage Gold-Tone Amethyst Bar Brooch

This is a vintage bar-style brooch featuring a central oval-cut deep purple gemstone, likely an amethyst or high-quality glass paste. The gemstone is secured in a four-prong setting within a decorative, intertwined knot-like circular centerpiece. The metal appears to be gold-filled or high-quality gold plating, showing a rich, warm luster consistent with mid-20th-century jewelry. The horizontal bar extends from either side of the central motif with open-work loop details near the center and solid tapered ends. On the reverse, the piece is equipped with a classic pinstem and a rollover safety clasp mechanism, though the pinstem is currently shown in the open position. The construction suggests a style period ranging from the late Art Deco era to the mid-century modern period (circa 1940s-1960s). Regarding condition, the metal shows minor surface scratches and a light patina appropriate for its age, without significant plating loss. The central stone appears securely set with no visible chips from this angle. While the user mentions a signature resembling 'Park Long,' it is likely a maker's mark for Park Lane, a well-known costume jewelry brand established in 1955, which would align with the craftsmanship and stylistic elements observed.

I have conducted a visual examination of the vintage bar-style brooch based on the provided imagery and descriptions. The piece displays the characteristic design language of the mid-20th century, specifically correlating with the output of Park Lane (likely the 'Park Long' mark noted) after its founding in 1955. The central amethist-colored stone, while vibrant, is consistent with high-quality foil-backed glass or costume-grade synthetics common to the era's accessible luxury market. The rollover safety clasp and four-prong setting indicate standard commercial manufacturing of the 1950s-1960s. The condition is 'Very Good,' showing a desirable warm patina and minimal wear to the gold-toned finish. In the current secondary market for vintage costume jewelry, Park Lane items are highly collectible but remain plentiful. Comparables for similar gold-filled or plated bar brooches from this manufacturer typically realize prices in the $40 to $70 range depending on the venue. The rarity is considered low to moderate, though the 'intertwined knot' motif adds a touch of classic sophistication that appeals to modern 'grandmillennial' fashion trends. Limitations: This appraisal is based strictly on photographic evidence. A definitive valuation would require an in-person inspection to verify the metal's composition via acid testing (to rule out solid 10k or 14k gold) and a gemological assessment of the stone to confirm it is not a natural Siberian Amethyst. Furthermore, physical examination of the 'Park Long' signature is necessary to confirm it is not a rarer, obscure maker. Provenance documentation or original packaging would potentially increase the premium by 15-20%.