Tungsten carbide is an exceptionally hard metal, polished with diamonds to achieve a shiny, mirror-like finish that remains beautiful over time. Remarkably, the material that is capable of scratching a tungsten ring is diamond; no other substance will affect it. Tungsten is significantly harder than metals such as 18K gold, tool steel, and titanium, providing a sparkling luster and impressive durability. All our rings are engraved with "Tungsten Carbide" to guarantee authenticity and quality. Each ring features a comfort fit design and is cobalt-free, ensuring a safe and comfortable wear.