The real value is in whole natural abalone pearls. Blister pearls occur naturally in some frequency. Also, because there is a very high production of commercial cultured mabes of the same light coloration as yours, it tends to diminish the value.
See
http://www.pearlbella.com/products.php?page=11
In order to make good money on your pearl, you have to find the buyer who cares about the difference. I think the value is in the beauty of the pearl and the care you took to inlay the stones. Add a great setting and you should do very well.
When I was at the Eyris production facility, Roger showed me the resin in the back of the pearls and it was opaque red. They have researched endlessly, so I'm sure they have the durability thing worked out. By the way, I have a ring, wear it frequently, and it hardly has a scratch.
Cheers,
Blaire