LAdams Diva Necklace of Shells, Opals, Chalcedony, Turquoise, Peridot and Pearls. One-of-a-kind necklace made of several strands of pearls, peridot, labradorite, and turquoise with shells studded with opals, carved turquoise, green chalcedony, and other semi-precious stones. Sterling silver closure.