TIFFANY & CO., A DIAMOND CIRCLE BROOCH designed as an open circle set with old cut diamonds, the ...

TIFFANY & CO., A DIAMOND CIRCLE BROOCH, 1940S in platinum, designed as an open circle set throughout with old European cut diamonds, the diamonds all totalling 4.3-4.5 carats, signed Tiffany & Co., no

TIFFANY & CO. Platinum, Diamond, and Sapphire Pendant/Broochthe circle brooch featuring a row of round brilliant-cut diamonds weighing approx. 3.10 tcw. and a row of channel-set baguette-cut sapphires

AN ANTIQUE DIAMOND BROOCH designed as an open oval, set with ten old cut diamonds all totalling 3.0- 3.1 carats, no assay marks, 2.8cm, 5.0g.

JEWELRY: Art Deco Diamond & Sapphire Circle Brooch, tested platinum Art Deco open circle brooch with milgrain, diamonds, and natural sapphires. Containing 28 bead- set transitional cut diamonds with a

Tiffany & Co. diamond and 18k yellow gold butterfly brooch designed as a butterfly, measuring approximately 33 x 31 mm, accented by (5) single-cut diamonds, set in an 18k yellow gold mounting, marked

Platinum circle brooch with bow, set throughout with single and old mine-cut diamonds totalilng approximately 2.00 cts., graded G-H color and SI clarity, 7.5 gms gross, est: $600/800

TIFFANY & CO., A RUBY AND DIAMOND FLOWER BROOCH in 18ct yellow gold, designed as a flower set with a round brilliant cut diamond in a cluster of round cut rubies, signed Tiffany & Co., st

Vintage 18K White Gold Daimond Circle Form Brooch set with 24 round old European cut diamonds, approx 1 1/2 ct total weight, 1 1/4" diameter.

Art Deco Diamond, Platinum Circle Bow Brooch. Featuring thirty-nine old European-cut diamonds weighing a total of approximately 3.25 cttw., set in a platinum circle bow brooch mounting measuring appro

Fourteen rose cut diamonds, set into tested 14K yellow gold mountings that at suspended over each opening of a 14K yellow gold, concentric circle designed brooch or pin, with remnants of black enamel.

An 18K gold, platinum, diamond, and ruby brooch, Tiffany & Co. Schlumberger, "Ibex" designed as an ibex with a pavé-set round brilliant-cut diamond head, a pear-shaped ruby eye, and ribbed gold h

A TSAVORITE GARNET, DIAMOND, BLACK DIAMOND AND RUBY TASSEL PENDANT in yellow gold, designed as an open circle set with tsavorite garnets, accented by rows of round brilliant cut diamonds, suspending a

Art Deco Platinum and Diamond Circle Broochthe circle brooch designed in a wreath motif and bead set with full cut round, transitional, and single cut round diamonds weighing approximately .65 total c

Bar brooch: Eagle's head hallmark / C (insect) C Including an antique platinum topped 14k yellow gold stylized circle brooch set with two round rubies, multiple rose-cut diamonds and two old mine-cut

Two early 20th century diamond and gem-set brooches. To include an alternating square-shape emerald and old-cut diamond line brooch, together with a Martin Mayer green paste circle brooch. One with ma

A gold, platinum, tourmaline, diamond, and turquoise brooch, Tiffany & Co. Schlumberger designed as a textured 18K gold salamander set throughout with emerald-cut tourmalines, platinum dactyly set wit

AN ANTIQUE AMERICAN RUBY, SAPPHIRE AND DIAMOND BIRD BROOCH / PENDANT, TIFFANY & CO EARLY 20TH CENTURY designed as a flying bird set with round and step cut rubies, French cut sapphires and rose cut di

Platinum, Synthetic Sapphire, and Diamond Bar Brooch the open-work bar brooch centering a bezel-set circle-cut synthetic sapphire measuring approx. 6.36 x 4.46 mm. and weighing approx. 1.55 cts., furt

A very fine vintage brooch that can be worn also as a pendant designed as a yellow gold circle set with a large lustrous mabe pearl, surrounded by white gold branches set with 20 round cut diamonds in

Victorian 14K yellow gold "Forget Me Not" petite flower brooch with center old mine cut prong set diamond .03 carats, I1 clarity, I color. The petals are bead set with seed pearls. Marked "B", "14K",

AN ANTIQUE DIAMOND HORSESHOE BROOCH designed as a horseshoe, set with old cut diamonds in star shaped borders, no assay marks, 2.1cm, 3.4g.

DIAMOND CIRCLE BROOCH Containing one old European cut diamond weighing approximately 0.85 carat, two round brilliant cut diamonds weighing approximately 0.50 carat total and numerous round brilliant,

A diamond heart brooch of open design, set throughout with graduated old round-cut diamonds, unmarked(Length: 2.5cm)

Edwardian 18K white gold and diamond filigree circle brooch, comprise of one old miners-cut diamond, approx: 0.03 ct. marked: "BELAIS / 18K" with maker's mark. 1.0" L x 0.937" W. 1.6 dwt inclusive.