Piaffe Round Stud Earrings As part of our Piaffe series, here is a small round Piaffe Horse stud earrings, a right, and left version. These measure 1/2 inch round and have the stud on the upper 1/3 of the back so the earring hangs evenly. An additional option has this same earring offered with a petite pearl drop. This Piaffe design has several variations for options listed under earrings. One of our most popular design series!