18k two tone (white and yellow) gold colored stone and diamond ring made by our Master Jeweler. In the center is one (1) GIA certified oval cut natural blue sapphire weighing 6.30 carats. The setting contains 1.48 carats in natural round brilliant cut diamonds. The total stone weight of this ring is 7.78 cttw. Our team of GIA Graduate Gemologists handpick and match each diamond by color, clarity, and cut to ensure unified quality and brilliance for generations.