Nomination Fashion Era Necklace with 2 Pearls, Sterling SilverDiscover the modernity of this Fashion Era necklace with precious shell pearls. Shell pearls are created from mother of pearl, the inner lining of oyster shells. Powdered mother of pearl is used to form the pearls, then they are covered with natural mother of. pearl and a protective coating to make them shine. This sterling silver jewel is available with two finishes: white rhodium treated finish or with an enchanting 18K yellow gold plated finish.