Brand New In Box Roberto Coin 18K WHITE GOLD DIAMOND SINGLE LINE OVAL EARRING. The only brand to own the name “perfect diamond hoop,” these round brilliant diamonds by Roberto Coin embellish both the outside and inside of each hoop creating absolute symmetry. Received as a gift from my ex, and can’t stand looking at them. My loss is your gain. Retails for $3200. Asking $2,500 OBO. These elegant silver hoop earrings add a touch of sophistication to any outfit. Perfect for both casual and formal occasions.