David Yurman's Forged Carbon Collection features an innovative material used in sports cars, golf clubs and speedboats. Carbon nanotubes and resin are compressed under heat and pressure, creating a state-of-the-art composite that's 3.5 times stronger than steel—but 65% lighter. 18-karat yellow gold and Forged Carbon Band, 8.5mm wide Style Number: R25021M88BFG