A CLASS='font-bold underline-link hover:text-barberry-yellow'>SIGNET ring is a type of ring that is typically used as a seal to authenticate documents. It usually has a flat bezel with an engraved design or symbol. A CLASS ring is a type of ring that is given to graduating students as a memento of their time in school. A decoder ring is a type of ring that is used to decipher secret messages by matching up symbols or letters. A CLASS='font-bold underline-link hover:text-barberry-yellow'>MOOD ring is a type of ring that changes color depending on the wearer's emotional state. An CLASS='font-bold underline-link hover:text-barberry-yellow'>ONION ring is a type of ring-shaped food made from onions that are dipped in batter and deep-fried. Teething rings are a type of ring that are designed to help babies with teething pain.