None at all. Rhinestones, diamantés, dimontes, crystals, christals, stones, gems, diamonds, bling, chatons, chaton roses, strass, flatbacks, swarovskis, swartzkofskis and jets are all names we've heard used to describe rhinestones! The technically correct name for a pointed back stone is 'chaton' and a flatback stone is 'chaton rose'.