Silver filigree black stone necklace & feather earrings

Lovely vintage set gifted to me in the 70s, like new, in original box. Necklace chain is marked Italy 925 and is 24 inches long. Oval black stone (onyx?) measures about 1/2 inch long. Feather earrings are beautifully accented with sparkling black and clear crystal beads. All black oval stones are of equal size and surrounded with delicate silver filigree. Box is stamped Red Fox Western Accessories, Ava MO.