HI, the center stone of this ring is a natural, earth mined, peridot, 8x6 mm, oval shape, 1.10 carats, v v s clarity. The ring has 2 natural blue sapphires on the sides, 1.5 mm , round shape, 0.03 cttw. v s clarity. The ring is made in 925 sterling silver. The size of the ring is 7.75. I offer change the size of the ring 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 size that you need or if you want the ring like is. The weight of the ring is 3.5 grams; 14 mm wide. LOVE IT OR RETURN IT.