Art Deco or deco, is an eclectic artistic and design style that began in Paris in the 1920s and flourished internationally throughout the 1930s and into the World War II era.The style influenced all areas of design, including architecture and interior design, industrial design, fashion and jewelry, as well as the visual arts such as painting, graphic arts and film. WIKIPEDIA
A pair of art deco diamond and enamel pendent earrings, circa 1925 Each old brilliant and single-cut diamond surmount, suspending a single-cut diamond foliate motif within a black enamel openwork geometric plaque, terminating in a pear-shaped diamond drop, pear-shaped diamonds approx. 3.30cts total, length 5.6cm
A ruby, diamond, emerald, onyx pendant necklace. Sugarloaf cabochon-cut ruby within a stylised pavé-set brilliant-cut diamond plaque, with baguette-cut diamond highlights, to an outer border of calibre-cut emeralds and onyx, suspending an articulated similarly set diamond, emerald and onyx pendant drop, terminating in a tapered baguette-cut diamond, pear-shape cabochon ruby diamond cluster drop, all suspended from a millegrain-set circular-cut diamond trace-link back chain.