Click on the images for a larger view. Limited Edition of 50 Numbered pieces. Don't Fuck Around Knuckles with Diamonds and Rubies. 1/2 Karat of Diamonds and 2 Karats of Rubies. Nikki Sixx to the left, is photographed wearing a set of Knuckles and model Kimberly Kane above, is photographed wearing a set of Knuckles and a Kay Band Cuff with a Baronial Fleur Cutout (see our leather cuff section) .925 Solid Sterling Silver. Handmade in the U.S.A.