Margaret De Patta (1903-1964) Modernist asymmetric sterling ring set with twenty square cut sapphires (approx. 9 carats TW ), signed: DePatta, Chevron mark of MDP, Sterling, c.1947
Boucheron Paris, Moderne ring set with a step cut square citrine (approx. 8 carats TW) and contoured bone details on either side all set in a solid 18K gold mount, signed, c. 1970’s