Exquisite fine vintage mens 10k gold diamond & onyx ring is a size 10 1/4 and weighs 5.4 grams. Diamond is 3.5mm and the onyx panel is 5/8" x 7/16". The onyx does have some teeny nicks at the edges as seen in close up pics.Thanks for looking and good luck! The item "Fine Vtg Art Deco 10k Gold Mens Diamond Black Onyx Ring sz 10 1/4" is in sale since Sunday, March 13, 2016. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Diamond". The seller is "hillbilly-filly" and is located in San Diego, California. This item can be shipped worldwide.