This rose gold wedding band is complimented by a modern, brushed gray, Tungsten Carbide exterior.Tungsten Carbide is the most scratch resistant material currently available for a ring. It will never rust nor tarnish, and is entirely waterproof. You can leave your ring in a vat of ferric chloride acid for a year, and it will be entirely fine (although I don't recommend it). Specs:Band Width: 8 mmBand Thickness: Circa 1.8 mmFit: Comfort fit Materials: Tungsten Carbide