This wedding band is size 54.Diamonds on all 3 side (left, top, right) holes and prongs has been premade for the diamonds so setting them is easy. you don't lose much metal because of that.AS YOU CAN SEE ON VIDEO, THIS MODEL HAS BEEN PRINTED? CASTED AND SETTED. WE ARE ALWAYS MAKING SURE OUR MODELS ARE 100% FROM A-ZThis ring is suitable for diamond: