What a feisty little brooch! I’m not sure what kind of crustacean it is, but its tail is articulated. It is encrusted in rhinestones, but is missing two (one eye and one from the tail). Hardly the details that people will notice! Minor wear as it is probably 50+ years old. I’ve never seen anything quite like this. It is unsigned and a definite conversation starter. Who has some love for a one-eyed shrimp? 🦐 🦞 Nonsmoking home. Thanks! Similar aesthetic: Sezane, Anthropologie, GLDN, Gorjana