This XILION rose flatback in Sapphire AB is fashioned from a lovely blue crystal shade coated in an Aurora Borealis finish, which gives it an iridescent appearance. Also known as rhinestones, these components are perfect for adding sparkle to scrapbooks, flip-flops, clothing, greeting cards, cell phones and more! Please note that when using flatbacks, you should never use a glue gun or super glue as they will damage the foil backing on the rhinestones.