THIS GORGEOUS GENUINE CORAL NECKLACE CERTAINLY MAKES A STATEMENT. THE CLASP AND CHAIN ARE STERLING SILVER AND THE CLASP IS MARKED 925. THE TOTAL LENGTH, WITH THE EXTENDER, IS APPROXIMATELY 20 INCHES AND IT ADJUSTS DOWN TO SHORTER LENGTHS AS WELL. THE NECKLACE DOES HAVE SOME WEIGHT TO IT AS WELL, WEIGHING IN AT APPROXIMATELY 125 GRAMS. IT IS A LOVELY PIECE AND IT LOOKS EXPENSIVE. PLEASE EMAIL ME WITH ANY QUESTIONS. THANKS. AHAVA KAUR