We went to a fancy restaurant in Honolulu to celebrate our 33rd wedding anniversary. We ordered a half dozen raw oysters as an appetizer. My wife picked the first one and bit into something thinking it was a piece of shell. Low and behold it was a very tiny pearl, about 1mm. We thought of course that this was some kind of special omen, especially given our anniversary, but I can't find anything about such an omen on the internet. I'm sure it means another good 30 years of married bliss.