An art deco synthetic sapphire and diamond jabot brooch, circa 1930 set with two oval-shaped synthetic sapphires, surrounded by old European-cut diamonds; estimated total sapphire weight: 7.00 carats; estimated total diamond weight: 2.25 carats; mounted in platinum; length: 3 1/8in.
An art deco diamond and ruby brooch, circa 1930 designed as a round brilliant-cut diamond bow, centering a pear-cut diamond, with calibré-cut ruby trim; pear-shape diamond weighing approximately 0.45 carat; estimated remaining total diamond weight: 3.00 carats; mounted in platinum; length: 2 1/4in.
An art deco sapphire and diamond clip-brooch, J.E. Caldwell, circa 1925 the shield-shaped panel set throughout with old European-cut diamonds and further accentuated by baguette-cut diamonds and sugar loaf sapphires; signed JEC & Co., estimated total diamond weight: 9.00 carats; mounted in platinum; length: 1 3/4in.
A sapphire, pearl and diamond brooch, circa 1930 The pierced oval plaque centrally-set with a cushion-shaped sapphire within a radiating surround millegrain-set with old brilliant and rose-cut diamonds and graduated rows of pearls of white, pink, yellow and brown tints, diamonds approx. 1.20ct total, one diamond deficient, French assay mark, pearls untested for natural origin, length 6.1cm
An onyx, diamond, rock crystal and eighteen karat white gold jabot pin the shaped-oval panel centering a frosted rock crystal within a U-shaped onyx, accented and bordered with round brilliant-cut diamonds, the tulip-shaped terminal of onyx and diamonds; estimated total diamond weight: 1.20 carats.
Georgian cameo and diamond brooch/pendant. 18kt rose gold and silver, 82 rose cut diamonds total weight approx. 2.30 carats, 3 oval natural yellow sapphires, approx. 2.25 carat total weight. Georgian or Georgian style.