Instead of a ring, you need to get a Mermaid Pendant when you’re ready to pop the question, but this isn’t something you can pick up at the local jewelry store or even the elusive Bookseller.

Give this to the person you want to marry. The Mermaid's Pendant is a Special Equipment item found in Stardew Valley. Give this to the person you want to marry. Equipment items are a type of item ...