Made completely of tungsten carbide, the 6. 0mm ring from the triton collection is beyond durable and lustrous with a polished finish. The inside of the band's shank is rounded for comfort. Tungsten carbide is a true innovation in jewelry. Tungsten is virtually impossible to scratch and is much heavier and denser than gold. Metal gram weight varies based on the ring size selected. Tungsten rings cannot be resized after purchase. Designed for a modern man on the go, styles in the triton collection are created from high-performance metals that are durable, comfortable and fashionable.