cat and mouse ring from Xidni on Etsy | $290 | Probably the Coolest Cat ring in the history of this or any other universe. It is the absolute epitome of both character and charm. This Sterling Silver "poison" ring opens up to reveal an adorable little mouse. Talk about a fat cat, now we know why! The cat ring weighs a very impressive 13.5 grams, it has genuine diamonds in the eyes and is finished in a beautiful antique patina. A polished finish is optional as well.