The earrings are made of sterling silver and the have a round green onyx set on the bottom of the wire. The French wire style earrings hang down 1 1/4 inches or 3.175 centimeters. The green onyx are 6 millimeters round. The onyx can rotate. These earrings are hand made by John Kennedy, the jewelry designer. These earrings weigh 2.1 grams. I will provide a earring box.