King Will Aurora Mens 8mm Black Tungsten Carbide Ring Luminosity Glow and Lord of Ring Inlay Beveled Edge IDEA: Unique luminous ring, glow in the dark, made of safe and eco-friendly material. STEP: Take the ring in the sunlight or flashlight a few minutes(let it catch more light), it will bright a lot. Excellent tungsten carbide with fabulous gold dragon pattern, perfect gift for wedding, engagement, anniversary. King Will's jewelry box, save your giftwrap service fee, and help you store the ring much safer & longer. If you have any question, please post into "Customer Questions & Answers" at the bottom of this page.