1.37 Spinning Diamond Hoop Earrings in 18k White Gold1. 37 Spinning Diamond Hoop Earrings in 18k White Gold. These spinning hoop earrings feature 1. 37 carats of diamonds finished in 18 karat white gold. Two hundred and forty (240) . 0057 carat diamonds are set on the inner and outer hoops. The smaller inside hoop ring is mounted on a hinge, allowing it to move within the larger ring. Finished on lever backings, these extraordinary 18k white gold hoops will bring a unique movement and sparkle to your