HI, the center stone of this ring is a natural, earth mined, green tourmaline, 6.5 mm, round shape, 1.25 carats, v v s clarity. The ring has 4 natural diamonds, 1.25 mm, round shape, SI1 clarity, color g-h. The ring is made in 14kt solid white gold, size 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, just 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 6.25 grams; 11 mm wide. LOVE IT OR RETURN IT.