The earrings are made of sterling silver and the posts are 14k white gold with heavy weight backs. Each earring has turquoise agate, blue onyx and lavender onyx. Each one has nine bars. The earrings measure 19 millimeter long and 7 millimeters wide. These earrings are hand made by jewelry designer John Kennedy. He has given me permission to sell some of his pieces. We will provide a earring box.