I Found this site with beautiful natural pearl jewelry.
www.jewelrybymonili.com
www.jewelrybymonili.com
I have seen this one in person. It is amazing. The pearl is a one-of-a-kind natural. I believe I had Natalie shoot it for the owner.
http://www.jewelrybymonili.com/jewelry/diamonds-pearls/rings/ring4.php
The metal colors really work well with the pearl and this is definitely a case where the gems serve only to enhance the pearl; they do not detract.