Fox Mask Stud Earring with Grey Moonstone Gem Drop Here is our top Fox stud earring in Sterling with a silvery Moonstone kite-shaped faceted drop. You can see the faceting in the various photos. The stud measures 1/2 inch round and has the post placed on the top 1/3 of the back to hang correctly. The Moonstone drop measures 1 1/4 inch tall x 1/2 inch at the widest portion. The overall length of the earring is 2 inches. I may get similar stones in the future, sometimes they are different shapes.