HI, this ring has 4 natural earth mined stones: 2 light blue aquamarine, 3 mm round shape, 0.15 cttw, v v s clarity. 2 colombian emeralds, 3 mm, round shape, v s clarity, 0.15 cttw. 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 4.2 grams; 17 mm wide. LOVE IT OR RETURN IT.