Pearls

Pearls are a treasure hunted for in the World of Daventry.

Background
Graham once had a gold band inlaid with pearls had been a gift from Valanice (this was possibly his wedding band). He was forced to trade with a beastly Ferryman to cross a river in the remote lands east of Daventry for passage, and to get the answer to a single question.

There was a mermaid named Pearl who was friends with the Ancient Mariner.

The Oyster from the Island of Wonder had a large pearl stuck in its mouth that was making it difficult to sleep.