The Crab, in Chinese symbolism, represents prosperity, success and high status. Could a frosted sea glass magnet with a crab on it bring additional prosperity? I'm not ruling it out! Anyway, crabs are cool looking and look great on a Mermaid Message Magnet. It's an inch and a quarter and has a half inch magnet attached. The colors are teal, light blue, dark blue, and green. There is a minimum order quantity of 6 magnets.