Jewelry has produced some pretty funny names. I heard about “doorknockers”, then I read about “knuckledusters” that were popular in the 1940s. Not your average hip hop ring with dollar signs, but heavy duty diamonds in geometric shapes. This is what UK jewelry writer Vivienne Becker wrote about it: “Slowly the 1930s look took on the 1940’s characteristics. You can see the transition clearly in the rings, which were particularly popular and plentiful at this time: square-edged knuckledusters for clenching round a glass of champagne, with layered edges like steps and square-cut stones stretched into a line over the corners and down the sides.“ I’m sure they must have looked like this one. Quote from Vivienne Becker Fabulous Fakes (p 151).