Water Resistant? Brass 18K Gold with Pearls Gold Filled Chain Hypoallergenic Nickel Free SIZE: 15" + 3" Extender, Pendant: 7mm x 8mm. Closure: Lobster Clasp DESIGNER NOTE Dainty never goes out of style; enjoy the latest in the bestselling Initials Series. The Pearl Initials are crafted to elevate any layered look and fit any style. TREND ALERT: Pearls are HOT for the Spring and Summer this year!