Pretty and powerful, our Stone Collection is made of wearable good vibes. Strung on a layered silver-plated chain, this necklace features drops made of semiprecious white opal (which, some say, has a calming and protective energy). Length: 15 1/2" with a 3" extender chain for adjustable length. Silver-plated brass, semiprecious stone, cubic zirconia . Lobster clasp closure. Nickel-safe.