Click on the images for a larger view. Limited Edition of 50 Numbered pieces. Dont Fuck Around Knuckles with Diamonds and Rubies. 1/2 Karat of Diamonds and 2 Karats of Rubies. Nikki Sixx is photographed wearing a set of Dont Fuck Around Knuckles .925 Solid Sterling Silver. Handmade in the U.S.A.