Vintage Crossing Over Necklace. Tropical blues and seaweed greens combine in a refreshing way in our handcrafted 13.5-inch Crossing Over Necklace. It features chunky turquoise beads with pale prehnite gemstones and a sumptuous 1.5-inch green quartz disk as the centerpiece. An antique coin wrapped in brass wire suspends from the quartz disk giving the necklace an allure of vintage chic. The brass cable chain is adjustable up to19 inches.