From the Perfect Diamond Hoops collection, Roberto Coin's stunning inside-out hoop earrings are crafted of 18K yellow gold set with glittering round diamonds. The acclaimed designer signs each piece with a single ruby placed in a concealed location.; Approx. 1" diameter; Polished 18-karat yellow gold; Diamond total carat weight: 3.43; Signature hidden genuine ruby; Leverback closure; For pierced ears; Made in Italy