A Belle Époque diamond brooch, by T.B. Starr & Co, circa 1915. The circular…

A Belle Époque diamond brooch, by T. Starr & Co, circa The circular…

AN ART DECO DIAMOND BROOCH, BY BOURDIER PARIS, CIRCA 1920. Designed as a ribbon bow, pavé set throughout with diamonds and set with a line of baquette cut diamonds to the centre knot, mounted in platinum, signed Bourdier Paris, with French assay marks. #Bourdier #ArtDeco #brooch

Stunning Circa 1920 brooch designed as a ribbon bow, pavé set throughout with diamonds and set with a line of baquette cut diamonds to the centre knot, mounted in platinum, signed Bourdier Paris, with French assay marks.

A diamond brooch-pendant  designed as a bouquet of round brilliant, marquise, pear and baguette-cut diamonds; estimated total diamond weight: 18.00 carats; mounted in platinum.

Diamond Brooch-pendant - 18 cttw - bouquet of round brilliant, marquise, pear and baguette-cut diamonds - mounted in platinum

Fabergé. Brooch "Rose". Platinum, diamonds. It was made for Empress Alexandra Feodorovna of Russia.

Platinum & diamond Fabergé "Rose" brooch made for Empress Alexandra Feodorovna of Russia.

A DIAMOND BROOCH, BY DAVID WEBB

Rate this from 1 to Diamond Brooches Art Deco Carved Sapphire Diamond Jabot Pin Brooch Vintage Art Deco Bumble Bee Brooch Pendant Opal Sapphire… Large

Massoni Sapphire and Diamond Brooch, 1970s

Massoni Sapphire and Diamond Brooch

Massoni Sapphire and Diamond Brooch, In white gold set with 46 marquise cut sapphires, each circa carats. The diamonds total weight circa carats.

FABERGE silver-topped gold, aquamarine and diamond brooch in Art Deco style, made in St. Petersburg around 1910 by Alfred Thielemann.

FABERGE silver-topped Gold, Aquamarine & Diamond brooch in Art Deco style, made in St. Petersburg around 1910 by Alfred Thielemann.

*A RUSSIAN GOLD, SAPPHIRE, AND DIAMOND BROOCH, WORKMASTER KONSTANTIN LINKE, BOLIN, ST. PETERSBURG, CIRCA 1895 formed as two intertwined snakes centering a faceted sapphire with four diamonds at the corners, contained in leather-bound case stamped with gilt crown, 56 standard width 7/8 in. (2.2 cm)

Gold, Sapphire, and Diamond Intwined Snake Brooch, Russian, circa 1895

An amethyst and diamond brooch  The scissor-cut amethyst framed by old brilliant-cut diamond and pearl scrolls

Victorian Amethyst and Diamond Brooch . The scissor-cut Amethyst framed by old brilliant-cut Diamond and Pearl scrolls. Pearls untested for natural origin, length

An Art Deco Aquamarine and Diamond Brooch,

An Art Deco Aquamarine and Diamond Brooch,

Art Deco Emerald and Diamond Brooch in Platinum #505543

Art Deco Emerald and Diamond Brooch in Platinum #505543

MOONSTONE AND DIAMOND BROOCH, CARTIER, CIRCA 1905.  Designed as a bow set with two pear-shaped cabochon moonstones accented with circular-cut and rose diamonds, signed Cartier Paris and numbered, French assay marks.

Cartier 1905 Brooch: designed as a bow set pear-shaped cabochon moonstones accented w/circular-cut & rose diamonds, signed Cartier Paris & numbered, FR assay marks

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