Platinum Diamond Hoop Earrings. Gorgeous Platinum diamond hinged hoop earrings. These incredible earrings are set with SI 1 diamond G-H in color. Diamonds total approx. .30ct tw for the pair. Incredible quality hinges, these platinum diamond hoops are bound to be a favorite. Pair of diamond hoops weighs 7.67grams. Hoops measure 5mm in width by 13.5mm in diameter.