Mauka Pearl Ring. Cultured Freshwater Pearls & 18k Gold PVD Plated Stainless Steel. Mauka Jewelry is designed to be worn all day, every day. The pieces are made with waterproof materials so you can wear them while surfing, swimming, showering, exercising, or sleeping. Mauka Jewelry is designed to handle both saltwater and chlorine. You can wear it in the ocean, pool, or shower without worrying about damage. (Make sure to rinse jewelry with freshwater after). Imported.