Queenberry Swarovski Elements Crystal Starfish Clear Aurora Borealis Pendant Sterling Silver Adjustable Chain Necklace 16'' + 2'' Extender 925 Sterling Silver (stamped) and Swarovski Elements Crystal Starfish in Clear AB (with the Strass Logo) The pendant is approximately 40mm high x 30mm wide. The necklace has a base length of 16 inch long and has a 2-inch long extension, making the maximum length 18 inch. The chain is about 1.2mm thick. Spring clasp.