I'll have more about the setting and how it was made in a Storybook Jewelry feature, but I decided to keep the emphasis on the stone itself, the setting had to be minimalist. So here's a picture of the necklace with the lovely setting on a neck wire.
Here's another view:
The neck wire looks odd because it's not sitting on a neck form. It's shaped to lay on the collar bones so as to not stick straight out. I also found out I need to turn the termination 90 degrees so it'll flat against the neck. Duh! Obvious things are not always apparent right out of the gate.