The Kelly Earrings are a simple, square, mother of pearl and 18k gold plated pair perfect for everyday! Each purchase of the Kelly Earrings means exploited women and girls can begin experiencing freedom at Starfish Project. Materials: 18k gold plated mother of pearl stainless steel stud earrings. Size: 0.25 inches. Hypoallergenic; lead and cadmium free with nickel content less than 100 ppm.