Crystal Lane flatback rhinestones are made of high-quality crystal glass using excellent machine cutting technology, resulting in shiny crystals that glitter even from far away. Flatback gems can add shine and charm to your DIY crafts, art projects, fashion designs and more. Combine with a mix of shapes, colors and sizes to make your handcrafts unique, attractive and eye catching! Simply add glue to the back and adhere to your craft!Details:Available in multiple colorsSS20 (4.7 mm) crystal size144 crystalsFaceted roundCzech glassRequires glue (sold separately)