These Crystal Cosmojet XILION Hotfix flatbacks from Swarovski are the ideal way to add sparkle and stay neutral. Each of these sparkling rhinestones features a faceted front surface, displaying a lovely deep red color that changes into every color of the rainbow at different angles. Its smooth back is affixed with heat-activating glue so adhering to surfaces is easy! Note: The 2028 XILION rose flatbacks are being replaced with the 2038 XILION rose enhanced flatback, which has a mirrored back made from real silver for more intensity.