I started playing around with a few ring designs and have had way too much fun, glueing and soldering bezels and setting together. This is a must try for everyone. Just look at how fun these are.I did have to create my own oval shaped cutters so that they were the right size to fit the oval settings and bezels I had. I think Linda did a video on how to make your own cutters. Look for it on the Friendly Plastic blog. It is worth your time to make your own, so you get a good fit.
If you are looking for fabulous filigree and findings... be sure to check out all the supply stores on etsy.