This sterling silver 8-10 mm wide band ring with knot. (Only the size 13.25 is 10mm wide. All of the others are 8mm wide.) They all weigh approximately 8 grams.  It is nice and solid. The middle of the ring with the decoration spins around. Caution: sometimes with wide band rings customers need to purchase a larger size than usual. Where the design meets on the back, it does not exactly match up depending on the size and where the design ends up.