Crafted from quality brass and plated with 18k gold, the DUMBO Ring sampled from original Arlo ring is crafted by hand, the metal hugs the cab stone organically and creates the perfect statement piece. This beautiful design originates from Sydney, Australia and is hypoallergenic and nickel-free. Stones 18 mm Aqua, 18mm Emerald Cab Available in three sizes. To ensure your DUMBO maintains its beauty, take care not to wear it while bathing, swimming, working out, or sleeping.