Vintage Aurora Borealis Rhinestone Brooch

This is a multifaceted vintage brooch featuring a dense arrangement of Aurora Borealis (AB) finished rhinestones set into a gold-tone metal frame. The item is characterized by its elongated, somewhat scalloped or tiered design, measuring approximately 3 to 4 inches in length. The rhinestones exhibit a characteristic iridescent shimmer, reflecting a spectrum of colors including blue, pink, yellow, and violet depending on the angle of light. Most stones are held in individual four-prong claw settings, which is a hallmark of mid-20th-century costume jewelry craftsmanship. Small purple accent stones are interspersed among the larger AB crystals to add depth and contrast. Based on the cut and the use of the AB coating (invented by Swarovski in 1955), this piece likely dates to the late 1950s or 1960s. The metal backing appears to be a bright gold-plated base metal. The condition appears to be fair to good for its age; while all major stones seem to be present, some of the AB coatings show slight surface wear or dulling, and there may be minor verdigris or tarnish on the metal prongs. No maker's marks are visible from the top view, though such pieces were common from designers like Weiss or Coro.