... colors and sizes. customer design welcome. Sew on Flat Back Stone, also called Sew on Rhinestone Claw Setting Stones, or Uniform ... Sew on Gemstones.Metal Claw: Brass/Iron.Stone: Acrylic/Glass/Resin.Shape: Round, Square, Rectangle, Oval, Heart, Drop, etc.Colors: Crystal ... + Silver Metal + Acrylic Stone + Crystal Color 3. Drop,Oval,Round,Eye Shape All Together. Uniform Sewing Pattern, Sew on Gemstones