It's a very nice little souvenir - so symmetrical and smooth. I once found a pearl in a raw oyster at a sushi bar but it was misshapen, discolored, and chipped from me chomping down on it. I was extremely thankful not to have damaged my tooth!
Oh, nice shape and it looks quite shiny! There are some tiny glass vials available at craft shops that can be easily made into a pendant to display your pearl! Quite the conversation piece!