Madewell Stone Collection White Opal Double Chain Necklace

From Madewell’s Website: “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.”