Vintage Gold-Toned Ring with Oval Turquoise Cabochon and Ornate Filigree

This is an antique or vintage ring featuring an oval-shaped turquoise cabochon set in a gold-toned metal band. The central turquoise stone is bezel-set and exhibits a mottled appearance with various shades of blue-green, along with darker matrix inclusions, suggesting natural, untreated turquoise or a composite stone like mosaic turquoise. The stone measures approximately 15mm in length and 10mm in width. The metal setting appears to be a tarnished brass, bronze, or possibly a low-karat gold alloy, displaying a warm, aged patina. The sides of the ring's bezel feature ornate, scrolled filigree or repoussé work, characteristic of Art Nouveau or Art Deco styles, or perhaps a more generalized vintage ornate aesthetic. These decorative elements are symmetrical on both sides of the central stone. The band itself is solid and appears to be of moderate thickness. There are no visible maker's marks or hallmarks in the image. The overall condition shows signs of wear consistent with age, including surface scratches on the metal and possibly minor abrasions on the stone, though no significant chips or cracks are immediately apparent. The patina on the metal adds to its antique appeal, indicating it has not been recently polished. The craftsmanship appears to be robust, though not exceptionally refined, suggesting it was likely mass-produced for a broader market.