French 1940s diamond set bow ring in 18kt yellow gold

French 1940s diamond set bow ring in 18kt yellow gold. A three-dimensional bow with voluminous ridges featuring a raised square collet to the centre set with a round Old European cut diamond, set to top and bottom with four round old cut diamonds in grain settings, flanked to either side with broad trumpeting shoulders which curve to a solid shank. Hallmarked 18kt gold, French.