Staret was an American jewellery company active for only a few years at the beginning of the 1940s. They are best known for their figurals, especially an enamelled and rhinestone pin of a hand holding a torch, a la Statue of Liberty. (I have a copy of this, since the original is quite scarce and very expensive…)
This feather is made, like most of their pieces, of pot metal and rhinestones. The flow is lovely and at nearly sixty years old, it still sparkles brightly.