Newstone Silver 925 Aquamarine Bead Necklace with 2" Extension Beautiful aquamarine round beaded necklace. Assembled in Japan. Length: 16 inches plus 2" extension chain (40cm-45cm including clasps and findings) Clasp and 5cm adjuster chain = .925 Silver Gift box is included. Our purchasing buyers carefully select stone beads direct from supplier globe and hand pick the best materials available.