Vintage Gold-Tone Textured Spiral Brooch with Faux Turquoise Cabochon

This is a vintage costume jewelry brooch featuring a dynamic, swirling spiral design. The piece is constructed from a gold-tone base metal, possessing a dual-finish texture: a heavily cross-hatched or Florentine-style brushed engraving occupies most of the surface, while the inner edges and the 'leaf' tip transition to a smooth, high-polish shine. A single oval faux-turquoise cabochon is bead-set at the bottom right terminal. The stone appears to be glass or resin, imitating natural stone with a mottled green-and-white 'seafoam' pattern. Geometrically, the piece forms an asymmetric open circular motif with overlapping layers that create a sense of depth and movement. In terms of condition, there is visible surface wear including minor scratches on the polished sections and slight dulling of the gold plating consistent with age. No maker's marks are present on the visible front surface, indicating it is likely an unsigned mid-century mass-produced piece. Based on the Florentine finish and the sculptural loop design, this brooch likely dates to the 1960s or 1970s. The craftsmanship is typical of high-quality vintage costume jewelry from this era, featuring cast metalwork with well-defined textures.