A belle epoque sapphire and diamond pendant The central millegrain-set cushion-shaped sapphire with old brilliant-cut diamond border mounted in a calibré sapphire openwork key pattern design panel with diamond collet points to a matching calibré sapphir
Belle Epoque Platinum, Gold, Conch Pearl and Diamond Lavaliere Suspending one oval conch pearl an openwork garland motif, set throughout with old European-cut diamonds, circa delicate platinum chain. Doyle New York.
A BELLE EPOQUE GEM-SET ENAMEL BROOCH Designed as an independently-set pear-shaped cabochon opal, within an openwork old European-cut diamond surround, enhanced by green enamel paisleys, each centering upon an old European-cut diamond single-cut emerald
AN ART DECO EMERALD AND DIAMOND BROOCH. The central octagonal emerald within an onyx and diamond surround to the openwork rectangular panel and diamond fringe with cabochon sapphire and ruby floral detail and onyx terminals, circa by chrystal
Early Art Deco openwork diamond and onyx corsage brooch, of geometric design formed by two graduated kite motifs, millegrain set with lines of diamonds and inset with onyx sections, the smaller kite hung below on two detachable lines of articulated
Platinum Burma Ruby and Diamond Deco Ring. An oval Burma ruby weighing approximately carats, with accompanying GIA report stating that there are no indications of heat treatment, is surrounded by single cut diamonds in a geometric platinum mounting.
Amethyst and diamond brooch/pendant, Tiffany & Co, circa In the Louis XVI revival taste, the surmount centering on a cabochon amethyst within an acanthus scroll surround set with circular cut diamonds, suspending an amethyst drop to a diamond set cap.