Platinum, Enamel, and Cultured Pearl Lily-of-the-Valley Brooch, Marcus & Co.

Platinum, Enamel, and Cultured Pearl Lily-of-the-Valley Brooch, Marcus & Co.

18 KARAT GOLD, PLIQUE-À-JOUR ENAMEL PENDANT-BROOCH AND CHAIN, MARCUS & CO., CIRCA 1900 - Photo c/o Sotheby's

18 KARAT GOLD, PLIQUE-À-JOUR ENAMEL PENDANT-BROOCH AND CHAIN, MARCUS & CO., CIRCA 1900 - Photo c/o Sotheby's

Marcus& Co.Circa 1930s Diamond Ruby  Emerald Gold Platinum Flower Brooch,Platinum, 18kt. Yellow & Pink Gold Diamond, Ruby & Emerald Flower Brooch. Unsigned Marcus & Co. typical of style and work made only by this great American jeweler.

Marcus& Co.Circa 1930s Diamond Ruby Emerald Gold Platinum Flower Brooch,Platinum, 18kt. Yellow & Pink Gold Diamond, Ruby & Emerald Flower Brooch. Unsigned Marcus & Co. typical of style and work made only by this great American jeweler.

A blue zircon and diamond ring, Marcus & Co.  signed Marcus, accompanied by a signed box; modified rectangular-cut zircon weighing approximately: 22.0 carats; mounted in platinum

A blue zircon and diamond ring, Marcus & Co. signed Marcus, accompanied by a signed box; modified rectangular-cut zircon weighing approximately: 22.0 carats; mounted in platinum

Platinum, Gold, Pearl and Diamond Pendant-Brooch, Marcus & Co.  The stylized fleur-de-lys mount enhanced by 4 pearls approximately 5.6 to 4.5 mm., set throughout with numerous old-mine cut diamonds, with pearl and diamond-set pendant loop, signed M & Co., circa 1905, approximately 9 dwt. Via Doyle New York.

Platinum, Gold, Pearl and Diamond Pendant-Brooch, Marcus & Co. The stylized fleur-de-lys mount enhanced by 4 pearls approximately 5.6 to 4.5 mm., set throughout with numerous old-mine cut diamonds, with pearl and diamond-set pendant loop, signed M & Co., circa 1905, approximately 9 dwt. Via Doyle New York.

This Art Deco-style platinum necklace designed by Marcus & Co.* features a 60-carat sky blue star sapphire from Sri Lanka in a setting studded with 126 diamonds.

This Art Deco-style platinum necklace designed by Marcus & Co.* features a 60-carat sky blue star sapphire from Sri Lanka in a setting studded with 126 diamonds.

An Iris ring retailed by Marcus & Co, likely made by GUSTAV MANZ (Manz's workshop supplied jewelry to Marcus in the early 1900s; drawings for a similar Iris ring are in his archive) #gustavmanz

An Iris ring retailed by Marcus & Co, likely made by GUSTAV MANZ (Manz's workshop supplied jewelry to Marcus in the early 1900s; drawings for a similar Iris ring are in his archive) #gustavmanz

Watch Pendant Painting-Marcus & Co. (Artist)  Fernand Paillet (French, 1919) (Artist)  MEDIUM  platinum, seed pearls, diamonds

Watch Pendant Painting-Marcus & Co. (Artist) Fernand Paillet (French, 1919) (Artist) MEDIUM platinum, seed pearls, diamonds

Lilies of the Valley Brooch with Natural Pearls, Green Enamel And 18k White Gold by Marcus & Co.  c.1930's

Lilies of the Valley Brooch with Natural Pearls by Marcus & Co

Lilies of the Valley Brooch with Natural Pearls, Green Enamel And 18k White Gold by Marcus & Co. c.1930's

PLATINUM, CARVED COLORED STONE AND DIAMOND BRACELET, MARCUS & CO.  The openwork bracelet of foliate design, set with baguette, square, round, old European and single-cut diamonds weighing approximately 19.00 carats, decorated with carved ruby, sapphire and emerald leaves, length 6 5/8 inches, signed Marcus & Co., one diamond missing; circa 1930.

PLATINUM, CARVED COLORED STONE AND DIAMOND BRACELET, MARCUS & CO. The openwork bracelet of foliate design, set with baguette, square, round, old European and single-cut diamonds weighing approximately 19.00 carats, decorated with carved ruby, sapphire and emerald leaves, length 6 5/8 inches, signed Marcus & Co., one diamond missing; circa 1930.

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