The necklace is made from sterling silver and features a lock with key. It can be fastened with a lobster clasp in various length. Both, the lock and the key are embellished with a white zirconia stone. The chain is adjustable length up to 40, 42,5 and 45 cm. Ref: KE2122-051-14 THIS PRODUCT IS AVAILABLE TO PURCHASE IN-STORE. Product Information Brand: Thomas Sabo Jewellery Type: Necklace Metal: Sterling Silver Gemstone: Cubic Zirconia Measurement: 12mm (H), 8mm (W), 1mm (D)