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