Stunning 18K Two-Tone Gold Geometric Diamond Wedding Band Ring. This gorgeous piece features 76 brilliant round diamonds and 2 princess cut diamonds, weighing .75 carats, and one center diamond weighing .25 of a carat. The top of the ring measures 3/8 of an inch wide at its widest point. The ring is size 6.5 and sizing is available. It weighs 5.7 grams.