These stud earrings are made with clay and gold plated brass. They are minimal and modern, but bright enough to make a statement. They are made of gold plated brass, clay, and are finished with nickel / lead free, surgical steel posts and rubber backing. Each item is individually handmade, it is possible that slight variations may occur. Triangle Measurement: 10mm x 2.5mm Material: Gold-Plated Polished Brass Geometric Shapes, Clay, Surgical Steel Posts (Nickel-Free), Rubber Backings