I didnt have it set, but I have it in a necklace 'cage', from Japans Pick a Pearl Im away for the weekend but I can post a picture when Im home Sunday if you want to see it.
Sorry, forgot to add the price, it was $15 to pick the pearl, and then i think my pendant was $20/25? I used the free gift card for it! X
My DD picked an oyster with 2 pearls and we had set as earrings. It wasn't cheap but they were gold. My MIL took her pearl home and had it set in a ring for $200 at her local jeweller. If I remember correctly, there were lots of different options and different price ranges.