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An early 20th century openwork diamond and platinum heart shaped pendant

Four channel set gem set rings

Edwardian emerald and diamond ‘toi-et-moi’ ring

A mid-century diamond ring

A 1930s platinum and diamond line bracelet

An early 20th century diamond bracelet, circa 1915

A Gold 'Resille’ Bracelet, 1960s

Cartier

An old cut diamond bracelet, 1940s

An antique diamond riviere with a cluster pendant

An early 20th century platinum and diamond necklace

An early 20th century gold and gem set necklace, circa 1900

Archaeological Revival gold and amethyst necklace, circa 1870

A mid-century diamond riviere necklace

A mid-century baguette cut diamond collar necklace

A pair of 1940s diamond ear clips

A pair of antique pear cut diamond earrings, circa 1915

A pair of 19th century amethyst drop earrings

A pair of antique diamond earrings, circa 1900

An early 20th century ruby and diamond arrow and heart brooch

A Turtle Brooch, 1960s

Cartier

A Demantoid garnet and diamond tortoise brooch, circa 1890

A 1950s gold and diamond clip

Cartier

An Art Deco diamond line bracelet by Dreicer & Co

Early 20th century diamond cross pendant, circa 1915

Mid-20th century aquamarine and sapphire ring

Cartier

A Pair of 19th Century Diamond Drop Earrings

Early 20th Century Navette Shaped Diamond Cluster Pendant

A Pair of Yellow Sapphire Hoop Earrings

Hemmerle

An 18k Italian Gold Cuff

An Early 20th Century Diamond and Natural Pearl Bracelet

Tiffany & Co.

An Art Deco Aquamarine and Diamond Bracelet

Oscar Heyman

A 1950s Gold and Diamond Bracelet

Raymond Yard

A Rare Bulgari "Montete" Necklace

Bulgari

Mid-20th Century Gold and Diamond Two Row Swag Necklace

An 18k Gold, Diamond, Emerald and Rock Crystal Lariat Necklace

A Pair of Art Deco Diamond Clips

A Sapphire and Gold 'Lilac Leaf' Brooch

René Boivin

Citrine and Gold Flower Brooch

Citrine Flower Brooch

Cartier

Art Deco Diamond Penannular Brooch

An Antique Yellow Diamond Cluster Ring

An Early 19th Century Georgian Diamond Ring

A Mid Century Ruby and Diamond Ring

Bulgari

A Ruby and Diamond Dome Ring

Early 20th Century Platinum and Diamond chain

An Art Deco Platinum and Diamond Bracelet

Tiffany & Co.

A 1970s gold link necklace

An antique diamond necklace, mid 19th century

A pair of emerald and diamond cluster earrings, circa 1890

18k gold Parentesi cuff bangle

Bulgari

An antique 3 stone old cut diamond ring

A pair of mid 20th century coral, enamel and diamond ladybird ear clips

Cartier

A square emerald cut diamond ring

A pair of gold and lapis lazuli rounded ring cufflinks, circa 1930-31

Cartier

A pair of gold and lapis lazuli baton cufflink, circa 1935

Cartier

A tubogas chain with diamond set pendant

Bulgari

An early 20th century diamond cross pendant

A French 1930s 18k gold and lapis lazuli bracelet

An art deco ruby and diamond bracelet, circa 1925

A diamond flower necklace, circa 1950

A late 19th century amethyst and diamond clover brooch

An art deco sautoir and pendant watch

J.E. Caldwell

A sapphire line bracelet, circa 1920

An old mine cut diamond ring

An antique gem-set heart pendant locket on a pearl set gold chain

A 1920's emerald and diamond bracelet

French Gold & Pyramidal Cabochon Sapphire Stirrup Cufflinks

Cartier

An Aquamarine and Diamond Dress Ring, 1930

Art Deco sapphire and diamond line bracelet, circa 1925

A Ruby Line Bracelet

An extraordinary mid-century sapphire and diamond bracelet

18th century oval link cluster bracelet

Early 20th century emerald and diamond cluster ring

An early 20th century butterfly brooch circa 1910

Diamond drop ear clips, circa 1940

An 18k gold industrial style bracelet

A late 19th century ruby and diamond crescent pendant

Art Deco multi-gem-set and enamel brooch, circa 1925

A 19th century fine emerald and diamond ring

An art deco diamond line bracelet, circa 1920

Single stone citrine and diamond dress ring

Cartier

A diamond an onyx bow brooch, circa 1915

Cartier

Diamond Drop Earrings, circa 1915

A gold long chain necklace with oval and lozenge pattern links, circa 1890

A Pair of Diamond Drop Hoop Earrings, circa 1930

A Diamond Cluster Pendant

An early 20th century moonstone and old cut diamond heart shaped ring

A plique a jour, blister pearl and diamond bat brooch, circa 1910

A gold, diamond and citrine flower brooch

Cartier

An antique cluster ring, circa 1890

A pair of natural pearl, diamond and chalcedony earrings, Monture Cartier

Cartier

Set of two graduated 19th century diamond daisy flowerhead brooches, circa 1880

An 2.82ct old mine cut diamond ring

An emerald and diamond ring, circa 1915

A pair of 19th century diamond cluster earrings, circa 1870

An art deco diamond bracelet, circa 1930

A pair of carved ruby and diamond earrings

Cartier

An art deco onyx and diamond dress ring set with a sugarloaf amethyst, circa 1925

Boucheron

A diamond strap bracelet, circa 1910

A pair of 3ct diamond studs, circa 1970

An French Art deco diamond square-link bracelet, circa 1925

Early 20th century diamond cluster ring, circa 1915

An early 20th century scroll and pear shaped diamond pendant

A collection of gem set gypsy rings mounted in 18K gold

A pair of art deco diamond and rock crystal ear pendants, circa 1920

A ruby and diamond double clip brooch, circa 1945

Boucheron

An early 20th century sapphire and French cut diamond line bracelet

A pair of ruby and diamond ear pendants, circa 1925

A sapphire and diamond panel ring, circa 1910

A yellow gold "B.Zero1" ring

Bulgari

An onyx and diamond bracelet

A diamond and ruby clip, circa 1930

An en tremblant antique flower brooch, circa 1860

An art deco ruby and diamond geometric cluster ring, circa 1920

Art Deco three stone baguette diamond ring, circa 1930

A rare art deco Diamond ring, surrounded by rubies and diamonds

An Art deco sapphire and diamond ring, circa 1920

An Art Deco diamond Maillon Panthere bracelet, circa 1915

Cartier

A pair of coral, diamond and sapphire ear pendants

An emerald and diamond ring, circa 1930

Pair of fin-de-siècle art nouveau gold and diamond cufflinks, circa 1900

A pink sapphire and diamond gypsy ring

A mid century art deco-style brownish-yellow diamond ring

Pair of diamond earrings, Paris

Cartier

An art deco unheated Ceylon sapphire and diamond ring, France, circa 1920

A art deco ruby and diamond ring, Ellis Brothers, Canada, circa 1925

A sapphire and diamond 'forget-me-not' ring, New York, circa 1960

Cartier

A diamond and sapphire brooch

A fine petit point-style diamond bracelet

A pair of retro sapphire, diamond & gold earrings, Paris, late 1940s 

Cartier

An important French art deco diamond bracelet, ​​circa 1935