.18ct .1920s .1930s .750 Art Deco Diamond and black Onyx panel yellow gold Birmingham 1934 buttery gold signet panel ringA glorious piece of Art Deco styled history. A rectangular shaped black Onyx panel gemstone is set with a central diamond accent. The frame of the gold signet ring is step set in a solid buttery gold around the rectangular Onyx gemstone. The ring holds a Birmingham K monogram which reads for 1934. It does not have a gold standard mark, however the Anchor position together with the date and acid tests done confirms it as 18ct gold. Ring size: inside