Vintage Men's 10K Yellow Gold Diamond Pinky Ring 6.1 Grams Size 5.75 IBG. Men's 10K yellow gold pinky ring marked inside IBG and 10K.Also marked in the front of the ring is MW2 and. 21 may be the size of the diamond. It looks close to a quarter of a carat. Vintage ring with scratching from wear. The item "Vintage Men's 10K Yellow Gold Diamond Pinky Ring 6.1 Grams Size 5.75 IBG" is in sale since Tuesday, October 1, 2019. This item is in the category "Jewelry & Watches\Men's Jewelry\Rings". The seller is "plr0412" and is located in Cincinnati, Ohio. This item can be shipped to United States.