The beautiful emerald cubic zirconia crystal in this nose stud makes it the perfect gift for a recipient with a May birthday, as emerald is the May birthstone. Made from 9ct yellow gold, this nose stud measures 7mm from front to back, with 5mm being the back of the L-shape, and it has a pin width of 0.57mm. The cubic zirconia crystal has a diameter of 2mm and the nose stud weighs less than 1 gram.