At Gembuilder, we believe that the jewelry you wear should be one of a kind, like you. That's why we make each piece to order, one at a time, just the way you want it. Choose Green Quartz Doublet and Sterling Silver or Rose Quartz and Sterling: it's your choice. Mix and match gems and precious metals for a look that's exactly you. Gembuilder uses only the highest quality materials to craft your Infinity Cushion December Birthstone Jewelry design with meticulous attention to detail. Our precious metals are recycled or responsibly mined. Our wide selection of Infinity Cushion December Birthstone Jewelry by talented designers means you can find jewelry that's exactly your style. You can also shop by style, choosing our Italian-made, Bangle, or Statement Rings Collections. Gembuilder's fine quality Infinity Cushion December Birthstone Jewelry is designed to be passed down for generations to come, crafted by hand in the United States.