Yes. There are differences in the letter versions of Bvlgari's white mother-of-pearl necklaces, because different series launched by Bvlgari or works by different designers use different letters or combinations of letters to decorate the necklaces. Bulgari’s Serpenti series uses snake patterns to decorate necklaces instead of letters. Bulgari’s B.zero1 series uses the letter B as the design element of the necklace.