About Gemstone Lock Rings. All our Gemstone Lock Rings are available in a choice of gems and precious metals. You can also add your own personal meaning to any of our Gemstone Lock Rings, creating a beautiful memory and brilliant reminder. We use only the highest quality materials to craft our Gemstone Lock Rings 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 Gemstone Lock Rings. The profile, textures, and details of our Gemstone Lock Rings 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 Gemstone Lock Rings is even more striking when brought to life in the finest precious materials.