About Cushion Birthstone Jewelry. All our Cushion Birthstone Jewelry are available in a choice of gems and precious metals. You can also add your own personal meaning to any of our Cushion Birthstone Jewelry, creating a beautiful memory and brilliant reminder. We use only the highest quality materials to craft our Cushion Birthstone Jewelry with meticulous attention to detail. Our precious metals are recycled or responsibly mined. We hand-select each conflict-free gem in to perfectly complement your selection from our Cushion Birthstone Jewelry. The profile, textures, and details of our Cushion Birthstone Jewelry add individuality and style to everything you wear. When our work is done and you open that box, you'll see your design from our Cushion Birthstone Jewelry is even more striking when brought to life in the finest precious materials.