Swarovski nail art rhinestones. Size ss5 (1.8mm). These have a flat back and so are easy to apply to the nail. As they are crystal they do not melt in acetone, unlike normal cheaper acrylic ones. So they can be used time and time again. Apply to the nail using nail glue or on a tacky nail polish and seal with a clear top coat. Applying a top coat will not dull these crystals in any way, you will not be disappointed!