Vintage Aurora Crystal Cluster Brooch - Iridescent Blue

Key Characteristics & DetailsThe Stone Effect: The rhinestones feature an Aurora Borealis (AB) coating, a specialized iridescent finish invented by Swarovski in 1955. It mimics the Northern Lights, shimmering with shifting tones of blue, violet, pink, and gold depending on how the light catches it.  The Construction: It uses a classic mid-century pronged setting to securely hold the large faceted chaton stones, set against a silver-tone metal backing.  Potential Makers: While many of these pieces from the 1950s and 1960s were unsigned, prominent costume jewelry designers of the era who popularized this specific look include Weiss, Kramer, Lisner, and Austrian crystal manufacturers.