My advice, go to the fish market. Get a live oyster. Wait till it dies, or have the person in the market slighty open its mouth. Put the ring in the oyster. Then take dhow trip, tell your gf that your going pearl diving. offcourse you need to get her all excited about pearl diving. Get her books, pics and tell how what a big part pearl diving played in qatar history. once she is excited enough head out to see.

leave the oyster in your pocket. plunge into the sea take the oyster out of your pocked.

come up acting like a little kid all excited that you have found an oyster, after many failed attempts. give her the pleasure to open the oyster. then she'll find the ring and see u in one knee.

this is so unique.