HI, the center stone of this ring is a natural, earth mined, peridot, 9x9 mm, trillion shape, 2.00 carats, v v s clarity. The ring has 4 natural diamonds, 1.25 mm, round shape, SI1 clarity, 0.04 cttw. I have 3 of this ring, one in white, one in rose and the one in the pictures in yellow gold. They are made in 14kt solid gold. The size of the rings is 7.75. I offer change the size of the rings to any size from 3 to 13 with no extra charge, so if you buy it, for a faster service, please send me a message telling me the color of the ring and the size that you need. The weight of the ring is 4.5 grams; 9 mm wide. LOVE IT OR RETURN IT.