HI, the center stone of this ring is a natural, earth mined, colombian emerald, 6x4 mm, oval shape, 0.40 carats, v s clarity. The ring has 2 natural australian, color play opal on the sides, 5x3 mm, oval cabochon, 0.40 cttw. This ring also has 4 natural diamonds, 1.5 mm, round shape, SI1 clarity, color g-h, 0.05 cttw. It is made in 14kt solid gold. I have 3 of this rings, one in white, one in yellow, and one in Rose 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. If you are getting one of them please send me a message to let me know the color of the he gold and the size that you need. If you have any questions please contact me. The weight of the ring is 3.5 grams; 5.5 mm wide. LOVE IT OR RETURN IT.