A VINTAGE PERIDOT, EMERALD AND DIAMOND BROOCH in platinum, the square openwork brooch set with a

A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7

A PLATINUM, EMERALD AND DIAMOND BROOCH Featuring two shield step-cut emeralds in a circular spray design with three dangling strands set with round, marquise-shaped, square and baguette diamonds weigh

in a floral motif, centering on one prong set square cut emerald and two prong set emerald cut emeralds, with round brilliant cut diamonds bead set to the petals and a prong set round brilliant cut di

An Art Deco diamond and platinum clip/brooch set with circular-cut, kite-shaped, emerald-cut, and calveshead diamonds; estimated total diamond weight: 8.00 carats, all within an openwork setting. (15.

Circa 1910, platinum Centering a square old mine-cut diamond graded M+ color, VS clarity, further set with two square old mine and eighteen single-cut diamonds, further accented with two rectangular

A VINTAGE GEMSET FLOWER BASKET BROOCH in 18ct yellow gold and platinum, designed as a basket of flowers, set with single cut diamonds, round cut rubies, emeralds and sapphires, stamped 18ct PLAT, 4.0c

A VINTAGE DIAMOND BROOCH in platinum, set throughout with old cut diamonds, the diamond totalling 2.0-2.2 carats, Portuguese assay marks, 4.0cm, 10.6g. 

Vintage Platinum & diamond brooch, c. 1950, set with a cluster of pear-shaped and marquise-cut diamonds, H-J color, VS-SI clarity, est. 10.0 carats, 2.5"l, approx. 18 dwt., illegibly stamped 869(?) Pr

Art Deco Diamond, Emerald, Black Onyx and Platinum Brooch. Set in the center with an approx. .65 carat old European cut diamond, H-I color, VS2 clarity. Accented with approx. 3.50 carat TW old Europea

EMERALD AND DIAMOND FLORAL CLIP BROOCH, in platinum. Set with a larger central emerald, flanked by emeralds on the side totalling approx. 0.53 ct. Diamonds totalling approx. 0.65 ct. W. 1.8 cm. 4.7 gr

Vintage Platinum Emerald & Diamond Flower Brooch, Containing Seven (7) Natural Bright Green Emerald = approx .40cts and Seventy-Nine (79) Round Brilliant Cut Diamonds = approx 1ct, The Sto

An emerald, diamond, and platinum brooch floral form set with pear-shaped emeralds, accented throughout with round brilliant-cut and baguette-cut diamond tendrils; estimated total diamond weight: 6.00

A VINTAGE DIAMOND BROOCH in platinum, designed as a scrolling spray, set with pear and baguette cut diamonds all totalling approximately 5.8-6.2 carats, stamped PT, 5.4cm, 19.3g.

Beautiful French openwork platinum brooch set with 4 white pearls with pink overtones, and diamond accents throughout - in both Old European and rose cuts. Stamped with the French domestic platinum ma

Vintage fancy and large floral and bow brooch. 139 high quality diamonds with a approx. weight of 9.60ct set in a hand fabricated platinum setting. Unmarked, tested for platinum. approx 1.5" X 2" with

Vintage Platinum Diamond Brooch, Spectrometer tested platinum, with estimated approx. 1.35 carats diamonds both prong set and bead set also three baguette cut diamonds, pin mechanism works properly, 1

VK ITOO DAVID WEBB 18 karat Yellow Gold Platinum Diamond Emerald Brooch A gorgeous vintage David Webb 18 karat gold brooch, featuring emerald and diamond. Designed as a swirled branch, this vintage Da

Art Deco Platinum, Diamond and Emerald Brooch , set with 1 emerald-cut diamond, approx. 1.03 ct. (VVS2/I), 4 emerald-cut diamonds, each approx. .38 (VS1/H-I), 2 fancy step-cut diamonds, each approx. .

Vintage circular platinum openwork brooch with central Old European cut diamond measuring approx. 4.0mm surrounded by single cut, round brilliant cut, and Old European cut diamonds. Total approx. weig

Platinum circle brooch set with sixteen diamonds of various sizes, approx. 3 to 4 carats of diamonds and 2 emeralds approx. 1 carat. In good condition.

A SAPPHIRE AND DIAMOND BROOCH The openwork brooch set with a central circular-cut sapphire, within a surround of old brilliant-cut diamonds in square millegrained settings, further issuing curved rows

Pendant. 14kt yellow gold openwork brooch or pendant inlaid throughout with prong-set round brilliant cut diamonds and round cut emeralds terminating in a single prong-set round brilliant cut diamond

One 20-point center stone with channel set round and baguette diamonds. Very clean and brilliant diamonds. Unmarked. 1 3/4" x 1". 8.5 grams, inclusive. In good condition.

A diamond and gem-set brooch. Of openwork design, the foil-back emerald and green paste quatrefoil, within a diamond and paste replacement scrolling surround. Estimated total diamond weight 1ct. Lengt