And Nick’s ring is really unique as well. He wanted a tungsten carbide ring- which is an unbreakable steel, similar to titanium. The down-side of titanium is that it cannot be cut off in an emergency, but tungsten can be shattered and has the look of titanium. Tungsten carbide is four times harder than titanium, twice as hard as steel, and is virtually scratch resistant. He wanted some sort of design on the ring and was glad to find this celtic cross ring here.