An onyx, ruby and diamond set panel ring, 18ct yellow and white gold, Art Deco styled, featuring a cut cornered rectangular panel of black onyx, set in a very fine gold edde, centred by a single brilliant cut diamond bezel set, totalling approximately 0.13ct, the onyx framed by calibre cut rubies of strong colour, stepping down to further rubies set to shoulders, merging to a grain set diamond band.