Blue Aluminum, Gold, Diamond and Tourmaline Orchid Flower Earrings by Emmanuel Tarpin, Paris, 2018

Art Deco Gem-Set and Mother-of-Pearl “Tree of Knowledge” Clock by Pierre Gravoin, Paris, for Black, Starr & Frost, New York, circa 1930, Mosaic by Vladimir Makovsky

Art Deco Diamond, Natural Pearl, Emerald, and Onyx Bangle by Cartier, circa 1925; Art Moderne Silver and Black Lacquer Bracelet by Jean Després, Paris, circa 1931; Art Moderne Ruby and Diamond Bib Necklace by Suzanne Belperron, Paris, circa 1935; Red and Black Lacquer and Oréum Set of Three "Giraffe" Necklaces and Three Bracelets by Jean Dunand, Paris, circa 1927; The Claudette Colbert Starfish: A Ruby and Amethyst Starfish Brooch Designed by Juliette Moutard for René Boivin, Paris, 1937; Brass and Steel “Six Circles” Brooch by Alexander Calder, New York, circa 1940; Art Deco Geometric Brooch by Gérard Sandoz, Paris, circa 1927; Art Deco Coral, Onyx, and Diamond Bracelet by Cartier, Paris, 1922

Art Deco Coral, Onyx, and Diamond Bracelet by Cartier, Paris, 1922; Art Moderne Silver and Black Lacquer Bracelet by Jean Després, Paris, circa 1931

Art Deco Gold and Diamond Lighter by Cartier, Paris, circa 1930

The Claudette Colbert Starfish: A Ruby and Amethyst Starfish Brooch Designed by Juliette Moutard for René Boivin, Paris, 1937

Artistic Pink Bakelite, Ruby, and Diamond Jellybean Suite of Bracelet and Earrings by Daniel Brush, New York, 1991

Ruby, Rose Quartz, and Enamel "Fleur" Brooch by Suzanne Belperron, Paris, circa 1936

Turquoise, Lapis Lazuli, and Gold Cuff Bracelet by Charles Loloma, Phoenix, circa 1975

"Last year, New York-based dealer Lee Siegelson – who sells 20th- and 21st-century jewellery, including pieces by Adriana and the illustrious Daniel Brush – was the first fine jeweller to exhibit at Design Miami/Basel (pictured above). He says his participation there, and at Design Miami and PAD London, sets jewellery in a different context, one that appeals to a younger, contemporary-art-buying clientele. 'Art and design fairs are where the buyers and excitement are right now. When I first went to Design Miami, as a visitor, I was struck by the furniture galleries getting behind new designers and selling their work as limited editions. I realised they’d crossed aucasinosonline.com/sa/ a line into contemporary design collectables – and that the same thing could and should happen to jewellery.' Siegelson’s instincts were spot-on."

Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Coral, Onyx and Diamond “Serpenti” Bracelet-Watch by Bulgari, Italy, circa 1960; Art Moderne Platinum and Diamond Pivoting Ball Wristwatch by Boucheron, Paris, circa 1937

Pair of Spinel, Diamond, and Pearl Ear Pendants by Lauren Adriana for Siegelson, New York

Featured pieces: Art Deco Platinum, Carved Ruby, and Diamond Necklace by Van Cleef & Arpels, Paris, 1929; Red and Black Lacquer and Oréum Set of Three "Giraffe" Necklaces and Three Bracelets by Jean Dunand, Paris, circa 1927; Modernist Hammered Silver and Blood Jasper Necklace by Jean Després, Paris, circa 1930; The Timken Necklace: An Art Deco Emerald, Sapphire, and Diamond Pendant Necklace by Cartier, Paris, 1925

Featured pieces: Art Moderne Silver and Black Lacquer Bracelet by Jean Després, Paris, circa 1931; Art Moderne Rock Crystal and Diamond Bangle by Juiliette Moutard for René Boivin, Paris, 1934; Modernist Hammered Silver and Bone Necklace by Jean Després, Paris, circa 1930; Art Moderne Diamond Cuff Bracelet with Removable Clip Brooches by Mauboussin, Paris, circa 1936; Art Deco Diamond, Natural Pearl, Emerald, and Onyx Bangle by Cartier, circa 1925; Art Moderne Silver Necklace by Jean Després, Paris, circa 1930; Pair of Art Deco Platinum, Lapis Lazuli, Diamond, and Enamel Pendant Earrings by Boucheron, Paris, circa 1925; Art Moderne Gold and Bone Tranche Cuff Bracelet by Suzanne Belperron and Jeanne Boivin for René Boivin, Paris, 1931

Featured piece: Art Deco Diamond, Enamel, and Gem-Set Bracelet by Boucheron, Paris, 1925

Featured piece: The Daisy Fellowes “Mercury” Wings: A Pair of Clips by Fulco di Verdura for Coco Chanel, Paris, 1934

Featured pieces: The Timken Necklace: An Art Deco Emerald, Sapphire, and Diamond Pendant Necklace by Cartier, Paris, 1925; Art Deco Platinum, Carved Ruby, and Diamond Necklace by Van Cleef & Arpels, Paris, 1929; Pair of Platinum, Emerald, Ruby, and Diamond Tutti Frutti Clips by Cartier, Paris, circa 1930.

Featured piece: Art Deco Diamond "Le Ciel" Clock by Cartier, Paris, 1928

Featured pieces: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926; Art Deco Diamond, Natural Pearl, Emerald, and Onyx Bangle by Cartier, circa 1925

Art Moderne Silver and Black Lacquer Bracelet by Jean Després, Paris, circa 1931

Featured pieces: The Rockefeller Cape Clasp: A Silver Cape Clasp by Alexander Calder, New York, circa 1936; The Rockefeller "Many V's" Necklace: A Silver Necklace by Alexander Calder, New York, circa 1940; The Rockefeller Cuff : A Bracelet by Alexander Calder, New York, circa 1960; The Rockefeller Drop Bracelet: A Silver Cuff by Alexander Calder, New York, circa 1940

Featured piece: Gold and Sapphire “Honeycomb” Bracelets Convertible to a Necklace by Juliette Moutard for René Boivin, Paris, 1950

Featured piece: Sapphire and Diamond Feather Brooch by Paul Flato, New York, circa 1940

Featured piece: Silver Cuff Bracelet by Alexander Calder, New York, circa 1940

Featured piece: necklace from the Peridot and Diamond Suite by Siegelson, New York

Featured pieces: Blue Diamond and Multi-Colored Diamond Ring by Lauren Adriana for Siegelson, New York; Art Deco Platinum, Sapphire, and Diamond Cigarette Case by Cartier, Paris, circa 1930

Featured pieces: The Cole Porter Egyptian Suite: An Art Deco Egyptian Scarab Belt Buckle Brooch, 1926, and Eye of Horus Bracelet, 1928, by Cartier, Paris; Art Deco Egyptian Revival Coral, Black Onyx, Turquoise, and Diamond Sautoir by Cartier, Paris, 1922

Featured pieces: Aquamarine, Sapphire, and Diamond Sautoir by Cartier, London, 1929; Art Deco Nephrite, Agate, Gold, Enamel, and Coral Desk Clock by Verger Frères for Boucheron, Paris, 1928; Art Moderne Platinum and Diamond Bangle by Cartier, Paris, 1934; Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Featured pieces: The Cole Porter Necklace: An Aquamarine and Ruby Belt with a Buckle Necklace Designed by Fulco, Duke of Verdura, for Paul Flato, New York, circa 1935; Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926; The Timken Necklace: An Art Deco Emerald, Sapphire, and Diamond Pendant Necklace by Cartier, Paris, 1925; Art Deco Tortoise Clock by Cartier, Paris, 1928; The Maharaja’s Masterpiece: A Kashmir Sapphire and Golconda Diamond Ring by Siegelson, New York

Featured piece: Art Deco Pearl, Amethyst, Diamond, Rock Crystal, and Black Onyx Bracelet by Mauboussin, Paris, 1927

Featured piece: necklace from Moon Quartz and Diamond Sautoir and Earrings by Siegelson, New York

Featured piece: The Dodge Clock: An Art Deco Citrine, Ebonite, Diamond, and Enamel Mystery Clock by Maurice Coüet for Cartier, Paris, circa 1920

Featured piece: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Featured piece: Art Deco Diamond Bow Brooch by Van Cleef & Arpels, Paris, circa 1930

Featured piece: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Featured pieces: The Timken Necklace: An Art Deco Emerald, Sapphire, and Diamond Pendant Necklace by Cartier, Paris, 1925; Pair of Golconda Diamond Ring by Siegelson, New York; George III Diamond Ear Pendants, Late Eighteenth Century; Art Deco Tortoise Clock by Cartier, Paris, 1928; Pair of Rose-Colored Spinel and Diamond Ear Pendants by Siegelson, New York; Diamond Pendant by Siegelson, New York; Sapphire and Diamond Feather Brooch by Paul Flato, New York, circa 1940; Art Deco Nephrite, Agate, Gold, Enamel, and Coral Desk Clock by Verger Frères for Boucheron, Paris, 1928; Art Deco Silver, Enamel, and Eggshell Lacquer Cigarette Case by Raymond Templier, Paris, 1928; Art Moderne Platinum and Diamond Bangle by Cartier, Paris, 1934; Art Deco Platinum, Carved Ruby, and Diamond Necklace by Van Cleef & Arpels, Paris, 1929

Featured piece: Art Deco Platinum, Carved Ruby, and Diamond Necklace by Van Cleef & Arpels, Paris, 1929

Featured piece: Art Deco Diamond Bow Brooch by Van Cleef & Arpels, Paris, circa 1930

Featured piece: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Featured pieces: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926; Art Deco Gem-Set and Mother-of-Pearl Chinoiserie Mystery Clock by Pierre Gravoin, Paris, for Black, Starr & Frost, New York, circa 1930, Mosaic by Vladimir Makovsky

Featured pieces: Bracelet from Art Moderne Gold, Citrine, and Diamond Suite by Cartier, New York, circa 1938; Art Moderne Silver and Black Lacquer Cigarette Case by Jean Fouquet, Paris, circa 1925

Featured piece: Art Deco Aquamarine, Diamond, and Enamel Bracelet by Jean Fouquet for Maison Georges Fouquet, Paris, 1926

Featured piece: Art Deco Diamond and Sapphire Bangle Bracelet by Van Cleef & Arpels, Paris, 1924

Featured piece: Archaeological Revival Gold and Chalcedony Cameo Brooch by Castellani, Rome, circa 1880

Featured pieces: The Cole Porter Egyptian Suite: An Art Deco Egyptian Scarab Belt Buckle Brooch, 1926; Art Deco Egyptian Revival Coral, Black Onyx, Turquoise, and Diamond Sautoir by Cartier, Paris, 1922

Featured pieces: Art Moderne Aquamarine and Diamond Necklace, circa 1935; earrings and bracelet from Gold, Lapis Lazuli, and Diamond Suite by Cartier, Paris, 1937; bracelet from Artistic Pink Bakelite, Ruby, and Diamond Jellybean Suite of Bracelet and Earrings by Daniel Brush, New York, 1991

Featured piece: Belle Epoque Diamond Bow Brooch by Cartier, Paris, circa 1904

Featured pieces: The Dodge Clock: An Art Deco Citrine, Ebonite, Diamond, and Enamel Mystery Clock by Maurice Coüet for Cartier, Paris, circa 1920; The Maharaja Sunset: A Golconda Diamond Ring by Siegelson, New York; The Baron de Rothschild Necklace: An Art Deco Emerald, Sapphire, Lapis Lazuli, and Diamond Pendant Necklace Designed by Charles Jacqueau for Cartier, Paris, 1924; Enamel, Moonstone, and Stained Ivory Japanese Apple Blossom Branch by Cartier, Paris, circa 1925; Art Moderne Platinum and Diamond Cuff Bracelet by Jean Fouquet, Paris, 1930

Featured pieces: The Timken Necklace: An Art Deco Emerald, Sapphire, and Diamond Pendant Necklace by Cartier, Paris, 1925; Art Moderne Silver, Gold, and Sapphire Cuff Bracelet by Cartier, New York, circa 1940; The Legend of Golconda: A Golconda Diamond Ring by Siegelson, New York; Aquamarine, Sapphire, and Diamond Sautoir by Cartier, London, 1929; The Cole Porter Necklace: An Aquamarine and Ruby Belt with a Buckle Necklace Designed by Fulco, Duke of Verdura, for Paul Flato, New York, circa 1935

Featured piece: Art Deco Platinum, Carved Ruby, and Diamond Necklace by Van Cleef & Arpels, Paris, 1929

Featured piece: The Duchess of Windsor Suite: An Art Moderne Blue Chalcedony, Sapphire, and Diamond Suite of Jewelry by Suzanne Belperron, Paris, circa 1935

Featured pieces: Bracelet from Artistic Pink Bakelite, Ruby, and Diamond Jellybean Suite of Bracelet and Earrings by Daniel Brush, New York, 1991; necklace from Fire Opal and Diamond Suite by Siegelson, New York; drawing of The Cole Porter Necklace: An Aquamarine and Ruby Belt with a Buckle Necklace Designed by Fulco, Duke of Verdura, for Paul Flato, New York, circa 1935; Platinum and Diamond Wristwatch by Boucheron, Paris, circa 1937; Pair of Ruby and Amethyst Starfish Ear Clips Designed by Juliette Moutard for René Boivin, Paris, 1939; The Millicent Rogers Heart: A Ruby, Sapphire, Yellow Diamond, and Enamel Brooch by Paul Flato, New York, circa 1938; The Dodge Clock: An Art Deco Citrine, Ebonite, Diamond, and Enamel Mystery Clock by Maurice Coüet for Cartier, Paris, circa 1920

Featured piece: Platinum and Diamond Wristwatch by Boucheron, Paris, circa 1937

Featured pieces: The Millicent Rogers Heart: A Ruby, Sapphire, Yellow Diamond, and Enamel Brooch by Paul Flato, New York, circa 1938; Sapphire and Diamond Ring by Siegelson, New York; Diamond Pendant by Siegelson, New York; Peridot and Diamond Suite by Siegelson, New York; Pair of Aquamarine and Diamond Ear Pendants by Siegelson, New York; Art Moderne Platinum, Gold, and Diamond Bracelet with Detachable Clip Brooches by Raymond Templier, Paris, 1938; Belle Epoque Diamond and Rock Crystal Devant de Corsage by Cartier, Paris, 1913; necklace from The Duchess of Windsor Suite: An Art Moderne Blue Chalcedony, Sapphire, and Diamond Suite of Jewelry by Suzanne Belperron, Paris, circa 1935

Featured pieces: Sapphire and Diamond Feather Brooch by Paul Flato, New York, circa 1940; The Cole Porter Necklace: An Aquamarine and Ruby Belt with a Buckle Necklace Designed by Fulco, Duke of Verdura, for Paul Flato, New York, circa 1935

Featured piece: The Millicent Rogers Heart: A Ruby, Sapphire, Yellow Diamond, and Enamel Brooch by Paul Flato, New York, circa 1938

Pair of Diamond “Black Lace” Cuff Bracelets by Michelle Ong for Carnet, Hong Kong, 2000; Art Moderne Platinum and Diamond Cuff Bracelet by Jean Fouquet, Paris, 1930; Art Moderne Diamond and Platinum Manchette by Lacloche Fréres, Paris, circa 1930; bracelet from The Queen Narriman of Egypt Suite: A Citrine and Diamond Suite by Sterlé, Paris, circa 1950

Featured pieces: The Millicent Rogers Heart: A Ruby, Sapphire, Yellow Diamond, and Enamel Brooch by Paul Flato, New York, circa 1938; Belle Epoque Diamond and Rock Crystal Devant de Corsage by Cartier, Paris, 1913; Art Moderne Platinum and Diamond Cuff Bracelet by Jean Fouquet, Paris, 1930; The Duchess of Windsor Suite: An Art Moderne Blue Chalcedony, Sapphire, and Diamond Suite of Jewelry by Suzanne Belperron, Paris, circa 1935; Gold and Plique-à-Jour Enamel Morning Glory Pendant Brooch by Marcus & Co., New York, circa 1900; Rock Crystal and Diamond Scroll Brooch by Suzanne Belperron, Paris, circa 1935; Art Deco Silver, Enamel, and Eggshell Lacquer Cigarette Case by Raymond Templier, Paris, 1928; The Dodge Clock: An Art Deco Citrine, Ebonite, Diamond, and Enamel Mystery Clock by Maurice Coüet for Cartier, Paris, circa 1920

Featured pieces: Pair of Diamond “Black Lace” Cuff Bracelets by Michelle Ong for Carnet, Hong Kong, 2000; Belle Epoque Diamond and Rock Crystal Devant de Corsage by Cartier, Paris, 1913; Belle Epoque Diamond Bow Brooch by Cartier, Paris, circa 1904

Featured piece: Art Moderne Silver and Gold Bangle by Cartier, Paris, circa 1930

Featured pieces: Art Moderne Gold, Citrine, and Diamond Suite by Cartier, New York, circa 1938

Featured piece: Art Moderne Platinum and Diamond Cuff Bracelet by Jean Fouquet, Paris, 1930

Featured piece: Gold and Plique-à-Jour Enamel Morning Glory Pendant Brooch by Marcus & Co., New York, circa 1900

Featured piece: Necklace from The Duchess of Windsor Suite: An Art Moderne Blue Chalcedony, Sapphire, and Diamond Suite of Jewelry by Suzanne Belperron, Paris, circa 1935

Featured piece: Diamond Ring by Siegelson, New York

Featured piece: Archaeological Revival Gold and Chalcedony Cameo Brooch by Castellani, Rome, circa 1880

Featured pieces: Art Deco Pearl, Amethyst, Diamond, Rock Crystal, and Black Onyx Bracelet by Mauboussin, Paris, 1927; Art Deco, Diamond, and Rock Crystal Bracelet by Cartier, Paris, circa 1925

Featured piece: The Cole Porter Necklace: An Aquamarine and Ruby Belt with a Buckle Necklace Designed by Fulco, Duke of Verdura, for Paul Flato, New York, circa 1935

Featured piece: Belle Epoque Diamond Necklace by René Lalique for Lacloche Frères, Paris, circa 1890