Four Strand Oil Slick Iridescent Graduated Bead Necklace with Rhinestone Clasp is a great day to night piece. Wear it with the clasp in the back for day, pull the clasp to the side to show for night. It measures 17 inches closed. It is approximately 2 1/4 inch where it drapes and 1 inch wide at the clasp. A lovely piece of vintage costume jewelry.