Usually when someone mentions a pearl engagement ring, they forget all about the wedding band and how it will with the engagement right. Then you said claddagh. Here's a couple of options. The pearl could close the claddagh. I think that would look pretty. Here's another. The band for the pearl could be in the trinity knot. The three knots could rise up at the shoulder of the ring where the pearl sits and could be prong mounts which secure and protect the pearl. By the way, that's my dream ring. One of these days ....
Pretty Panda pic by nlerner on her U.S. excursion last year, San Diego Zoo.[/SIZE][/SIZE]