Circa 1960s, 18k, Swiss. Set with a luminous 4.0-carat blue moonstone, this chic sixties ring was inspired by the revolutionary 1937 ring by Harald Nielson for Georg Jensen, a groundbreaking design where all the ornamentation was contained within the form of the setting and the cut of the stone. Following in those footsteps, this unique elongated Swiss version is exquisitely made. Excellent condition.