The Crystal Lane metallic round flatback rhinestones are made of high-quality crystal glass with excellent machine cutting technology for a perfectly faceted appearance. Add a little glamour and a shimmery flourish to your DIY crafts, art projects and fashion design projects with these gem rhinestones. Details: Available in multiple colors SS30 (6.5 mm) 72 rhinestones Round flatback Glass Fix to surface with glue (sold separately)