Vintage Filigree Opal Brooch or Pendant

This is a vintage jewelry piece, likely a brooch or a pendant, featuring a central oval-shaped white opal cabochon. Measured visually against common jewelry standards, the opal is approximately 8mm by 10mm. The gemstone exhibits a milky white body color with subtle flashes of green, pink, and orange internal 'fire' characteristic of Australian white opals. It is securely held by four thick gold-toned prongs. The surrounding metalwork is a delicate gold-over-base-metal or low-karat gold filigree, featuring six rounded, scalloped loops that give the piece a flower-like appearance. The wirework exhibits a textured, beaded, or 'milled' finish along the exterior curves of the filigree. Evaluation of the craftsmanship suggests a mid-20th-century production, possibly 1950s-1970s, during the popularity of 'costume' and semi-precious floral designs. Condition appears fair to good: the opal shows no immediate surface cracking (crazing), but some slight wear or oxidation is visible on the gold plating near the prongs and inner filigree. No maker's mark is visible from the front view. The piece exemplifies the romantic aesthetic of retro-era jewelry with its emphasis on scrollwork and soft color palettes.