Sapphire and Diamond Ring. The carat weight of the diamonds is .25 carats and the sapphire carat weight is .25 carats. The top of the ring is 3/8 of an inch long and 3/8 inch wide at the widest point with four diamonds down the band on each side. The diamond clarity is VS2-SI1 and the color is G-H. These are high quality stones for such a great price. All of our diamond pieces come with certified appraisals from Wallace Brothers Manufacturing.