All mokume rings are available in an etched, etch & oxidized, or satin finishes.
Etching provides light texture between the layers and really brings out the Mokume Gane pattern.
Etched rings containing silver can also have an oxidized finish that turns the silver a dark gray/black hue. Please note that although the oxidization treatment is stable and durable the black color of oxidized silver is a surface treatment and can be worn off or degraded by some chemicals. Your own body chemistry and lifestyle will affect the lifespan of the treatment.
I only oxidize rings that have been etched as this provides protection from wear as the silver layers are recessed. I am always happy to re-oxidize your ring any time.