Vintage Corbel Jewelry Brand Rhinestone Brooch Earring Set On Cards Unworn 1960s

Estate find. On original cards that are marked Corbel Jewelry. From the 1960s. I see no evidence that these have been worn, no discoloration or wear to metal. Rhinestones are bright and clean except for the round center light brown rhinestones, those are showing some tiny black spots that can be seen under magnification. Brooch measure 2 3/4” long x 1 3/4” tall, earrings measure 1 1/8” long x 3/4” wide. THANKS FOR LOOKING!