Nakai sterling ring with 9 semi precious gems: 4 turquoise, 4 amethysts, and a pink agate arranged in a rectangle, and bezel set in sterling. The face is 1" by 3/4". Size 7 3/4. The ring is adjustable, but I couldn't move it back to the place that it had been, where someone else wore it at 7" or 7 1/4". Your jeweler could. Marked Nakai sterling. The Nakais have used a process to remove the copper close to the surface. Sterling is 925/100 and the rest is copper. The ring will tarnish very very slowly. The Nakais have been working since the 1970s.