The large oval stone in the center is Green Mojave Turquoise from Kingman, Arizona. Colbaugh Processing uses leftover turquoise scraps from bead making, dyes some of it, and mixes it with bronze, natural turquoise, and resin. They compress this mixture into blocks and cut cabochons from them. This process ensures no turquoise goes to waste! All stones are set in sterling silver, and the ring band is also sterling. The ring is a size 7 1/2.