Extra points to Scout Curated Wears for the creativity of these earrings. The brass crescent moon attaches to the back of the earring and can even be worn with other stud earrings! We love the way they look with these, though. Full moon and crescent together make something beautiful. Brass and semi-precious stone with either 14K gold dipped or sterling silver dipped. Hypoallergenic. Nickel and cadmium free. Made in China.