Enhance clothing, fashion accessories and cell phone cases with these XILION rose flatbacks in a gleaming dark brown shade called Jet Nut! SWAROVSKI ELEMENTS has created these metallic brown rhinestones with many precisely cut facets so that they better catch the light. These flatbacks should not be used with a glue gun or super glue (cyanoacrylate), as these glues will damage the foil backing. For help determining the size that you need, take a look at the Flatback Sizing Chart