14k Yellow Gold Pendants with Natural Opals and Diamonds.  Discovered on a sourcing trip to Tucson, these remarkable boulder opals immediately reminded us of the ocean. Their vivid flashes of blue and green felt like sunlight reflecting across the water, inspiring a collection of one-of-a-kind seaside treasures. Each opal is framed within a sculpted conch shell, complete with diamond accents and intricate details that celebrate the beauty of the sea. No two stones are alike, making every Boulder Opal Conch Pendant uniquely its own.