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