I'm in the middle of making a 14K white gold tube-set stacking ring with faceted gemstone and a sterling silver stacking ring with black onyx. Here's a picture of the rings in progress. You can see 2 3M radial bristle discs on mandrels. They're used for polishing. You also see large and small jeweler's files, a round-nose pliers, some scrap silver, and a 12mm black onyx cabochon.
Here's what the 2 rings will look like when they're finished.