Pick up this 24mm smoked topaz sew-on rhinestone for beautiful results! This gorgeous piece in a geometric square is shaped for maximum sparkle. Please note that when using flatbacks, you should never use a glue gun or super glue (cyanoacrylate) as they will damage the foil backing on the rhinestones. Also be aware that while flatbacks are terrific for adding sparkle to clothing, they should never be dry-cleaned. Please follow the cleaning care instructions on your glue; many types of glue require that clothing be air-dried. If you do machine dry always turn the article inside out before being placed in the dryer to avoid damage.