Swarovski innovations Spring/Summer 2019 - Swarovski Flat Back crystals are sometimes called Rhinestones or Diamante. They are loose components with platinum foiling on the back and a flat underside. Swarovski Flat Backs can be applied with glue to different materials. Perfect for adding sparkle to garments, mobile phones, nails, greeting cards and any flat surface. Apply using fabric glue or Dazzle-Tac from our Tools section.(Super Glue leaves a white surface frosting difficult to remove, do not use Super Glue)