A stylish onyx and diamond set ring by Kutchinsky. 18ct yellow and white gold, hallmarked Kutchinsky with connecting carat stamps, circa 1970's, crafted in a cubic style with two rectangular panels set side by side, spaced and connected by a flush polished panel of black onyx, each panel grain pave set with brilliant cut diamonds in white gold, edged in closed sides, further worked and detailed by textured gold sides and band, tapering to reverse