ss5 Flat back Swarovski Xilion Rose 2028 rhinestones are perfect for nail art. These tiny little faceted glass crystal rhinestones have a silver backing and are easy to apply to nails either with acrylic nail glue or with clear nail varnish. ss5 Swarovski rhinestones also known as flat backs or diamantés are approximately 1.8mm in diameter so are small enough to be able to make intricate designs with.