Rhinestones for costume decoration. They sparkle! Size: 18mm Quantity: 20 pieces Color: Crystal AB Material: Glass Bottom: Flat Type: Sew-on type with holes (Can also be attached with rhinestone glue) Larger sizes may have initial scratches from the manufacturing process. If you are concerned, please ask before purchasing or refrain from purchasing ( °▽°) Very beautiful for decorating costumes such as rhythmic gymnastics leotards, figure skating, social dance, belly dance, ballet costumes, baton twirling, and cheer dance!