An art deco diamond and emerald bow brooch, circa 1925 The stylised ribbon bow with pierced and millegrain detail, set throughout with rows of old brilliant-cut diamonds and french-cut emeralds, a larger collet-set old brilliant-cut diamond at the centre, diamonds approximately 3.25 carats total, partial French maker's mark, partial French assay mark.
Art Deco Platinum, Emerald, and Diamond Brooch, set with an emerald-cut emerald measuring approx. 8.20 x 6.10 x 4.30 mm, further set with baguette-, old European-, single-, and fancy-cut diamonds, approx. total diamond wt. 3.00 cts., fancy-cut emerald accents, millegrain details, lg. 2 1/8 in.
An Art Deco diamond brooch, Cartier, circa 1925. The pavé-set surmount supporting articulated plaques set with circular-, single-, square-cut and baguette diamonds, and a briolette drop, detachable brooch fitting, signed Cartier, French assay marks.
An emerald and diamond brooch/pendant, ca 1915. Centrally-set with an old brilliant-cut diamond within an openwork quatrefoil set with alternating rows of calibré-cut emeralds and rose-cut diamonds, accented with circular-cut emerald and single-cut diamond flowers, principal diamond approx. 0.85ct, by amelia
An art deco diamond, sapphire and platinum brooch, circa 1915 the ribbon brooch set throughout with single and old European-cut diamonds and accented with calibré-cut sapphires; estimated total diamond weight: 2.25 carats; length: 3¾in.