Vintage Rhinestone Infinity Loop Brooch

This item is a costume jewelry brooch featuring a stylized infinity or double-loop figure-eight design. The piece is constructed from a silvery-toned base metal, likely a zinc alloy or rhodium-plated brass. The outer perimeter of the two loops is pavé-set with eighteen round, brilliant-cut clear rhinestones which appear to be glass or crystal. These stones are held in place by small decorative prongs. The center of the brooch features a unique crossing element: a smooth, polished silver-tone 'S' curve that overlays two textured, wing-like or leaf-like shapes with fine linear striations. Chronologically, this style is consistent with mid-to-late 20th-century costume jewelry, approximately 1960s-1980s. The construction shows modular assembly common in mass-produced fashion accessories. Regarding condition, the stones retain moderate luster, though some appear slightly dull, suggesting minor surface oils or adhesive aging. The metal finish shows light surface scratches consistent with use. No hallmark or maker's mark is visible from the front view, suggesting a generic or department store brand origin. The craftsmanship is of standard commercial quality, focusing on visual sparkle and symmetry.

I have conducted a visual examination of the Vintage Rhinestone Infinity Loop Brooch based on the physical characteristics provided. The item is a mid-to-late 20th-century costume jewelry piece, likely produced between 1965 and 1985. The construction utilizes a silver-tone base metal and pavé-set glass rhinestones. The lack of a maker's mark suggests it was manufactured for a mass-market department store rather than a prestige designer like Trifari or Eisenberg. The condition appears fair to good; while the structural integrity is intact, the slight dullness in the stones suggest either 'dead' foil backing or dirt accumulation, and the metal shows light abrasions. In the current secondary market, there is a high supply of unsigned, mid-century costume jewelry. Comparables for generic figure-eight or infinity motifs in non-precious metals frequently sell in the $15-$25 range at estate sales and online vintage marketplaces. The value is driven primarily by its aesthetic appeal as a wearable accessory rather than its rarity or investment potential. Critically, this appraisal is based solely on visual data. I cannot definitively verify the base metal composition or the stone material without performing a streak test or utilizing a refractometer. An in-person inspection would be required to check for 'green rot' (verdigris) in the crevices and to examine the pin-back mechanism, which can often provide better dating evidence than the front design. Full authentication of the era and manufacturer would require original packaging or catalog documentation, which is currently absent.