Selective focal point pictures on silver-colored ring – Tungsten Rings Have Tremendous Durability Our Tungsten Ring‘s hardness reach is a determiner concerning where the strongest minerals are on the planet. Pure tungsten comes into at a 7.5, whilst tungsten carbide (what just tungsten rings are taken of) comes of at an terrific 9.5 rating. These rings are extraordinarily strong. Compare to that amount along 18K rose gold who comes within at beneath three of the hardness scale.