The other thing about looking beyond the standard bezel for stones is that you are opened up to using stones and shiny bits of all kinds of shapes and sizes. It is one of the reasons we love polymer clay so much! It is so amazingly flexible.
You can see just how wonderfully it can hold onto and embellish already very interesting stones and crystals in this array of examples from Canada’s Martina Gutfreund. Not only can you get really creative with the bezels and caps, you can combine all kinds of stones, even with wildly disparate forms.
Some visual relationship between the stones should be present in deciding what stones to pair up, such as similar or complementary colors or textures. (Do you see how the most satisfying designs here are the ones with a very evident relationship between the stones?) After you have that, the clay can help you bring them together physically with all kinds of room for creative design work.