Lindsay Hasz and her husband were recently enjoying a rare evening without kids when they decided to dine at Issaquah's Montalcino Ristorante Italiano. Hasz ordered the frutti di mare, a traditional Italian medley of seafood and shellfish. Then she bit into something unexpected. "It was quite jarring," she said. "In fact, I thought I almost broke my tooth it was so hard." Inside the meat of a clam on her dish she found what looked like a pearl. "I thought maybe it was an earring from an employee in the kitchen and it fell into my dish," Hasz said. She...