Outside finishes

The Brushed finish has fine lines that go along The Polished finish is a mirror finish. It looks similar to a chromium toaster. The Angled Brush finish has fine lines going at a 45 degree angle.  It catches the light nicely on a curved ring. The Cross Brush finish is a coarse finish that shows X marks in the light.
Brushed Polished Angled Brush Cross Brush

The Satin finish on the far ring is an even matte finish.  It is done with a scruffy wheel,<br>so cannot be controlled in tight areas. The Bead Blast finish is a dark and dull finish. It contrasts nicely with polished. It is not as robust as Satin. The Peened finish is made with a ballpeen hammer then polished afterwards. It reflects facets of light and doesn't show abuse.
Satin Bead Blast Peened

The Brushed Ballpeen is also made with a ballpeen hammer, but it is brushed afterward to be less reflective. The Rough Scratch finish is done with a sanding drum while the ring spins on a lathe. It has a clean, even lines. The Angled Rough Scratch is the same as RS, but the lines go more at an angle to the ring.  It enhances reflections on curved rings. The Alien Skin finish has random lines of swirling patterns done with an abrasive tip. The finish looks better in person than in photographs.
Brushed Ballpeen Rough Scratch Angled Rough Scratch Alien Skin