Crystal Lane flatback rhinestones are made of high-quality glass with excellent machine cutting technology. These flatback gems glitter and shine even from far away. Use to add eye-catching accents to DIY crafts, art projects, fashion pieces, accessories and more! Details: Available in multiple colors SS30 (6.5 mm) rhinestone size 72 rhinestones Faceted round Glass For use with glue and other adhesives (sold separately)