A Pearl

When you find something undesired in your food, it usually is just that: unwanted. Most of the time, it's nasty and occasionally dangerous. It's therefore pleasant to observe the incredibly infrequent instance when the object that appeared was actually a benefit.

When she bit into something hard in 2016, a woman in Seattle was eating at an Italian restaurant. It turned out to be a pearl rather than one of the usual possibilities, such as a shell, a bone, or some sort of kitchen trash. However, it's not just any pearl. She then had it appraised and learned that it was a reasonably uncommon Quahog pearl worth $600. The woman made the decision to have the pearl turned into a necklace rather than sell it.