This is such a pretty necklace with its pink and white beads - 3 strands of them and they are all glass. The beads are 7.27mm and 7.92mm. They are a very pretty pink and white. The clasp is silvertone and adjustable. it is marked Deauville. Necklace can be adjusted from about 25 1/4" to 29 3/4". The beads on the adjustable chain are slightly different in color so that may have been added later. This is a fabulous necklace and the length is spectacular. You will have many years of wearing pleasure from this vintage piece.