Trustmark 925 Sterling Silver 4mm Fiery White Created Opal Ball Stud Post Earrings, Lorraine Features our petite 4mm bead or ball size which measures about 1/6 of an inch. Made with created Fiery White Opals! Professionally hand-set in our own US studios. Style or Setting: Solid 925 Sterling Silver with a Rhodium finish cup post for Pierced Ears. Please note that these are small, petite earrings.