This ring is hand forged from a single piece of zirconium using traditional blacksmithing techniques of fire, hammer and anvil. Zirconium is a metal in the same group as titanium. It is durable, light weight, and will not react or corrode. Normally a light grey color, when zirconium is heated it forms a thin black oxide layer. The black layer is quite durable, it will not wash or rub away. However, it will scratch against hard materials (metals, concrete) revealing the lighter grey metal beneath. The outside of the ring has a hammered, rough matte finish. Please indicate ring size. Band width can also be customized, please indicate in order notes. For reference, the ring shown in the photo is a size 8, and about 6mm is bandwidth.