Independent media since 2014
by Charlotte Wannebroucq · CNE Accredited Gemmologist

EXCEPTIONAL SALE AT SOTHEBY’S

Charlotte Wannebroucq, CNE-certified expert gemmologist
Founder and Editor-in-Chief
Updated on September 16
Updated on 16 September 2026
Sotheby's Geneva 2

Exceptional sale at Sotheby’s.
A meeting between high-end jewelry and aristocratic jewelry at Sotheby’s.

Brooch/Tiare GEORGES FOUQUET, Aigues Marines, Fine Pearls and Diamonds, 1908 © Sotheby's
© Sotheby’s

It is a privilege to attend the presentation of the “Magnicient Jewels and Noble Jewels” sale that took place this Thursday evening at the Galerie Charpentier.

This sale will take place on November 12th in Geneva at Sotheby’s. This is an exceptional collection of precious stones and jewelry, originating from the collection of Dimitri Mavrommatis. This passionate Greek collector of fine arts and decorative arts managed, thanks to his unique perspective, to bring together exceptional quality jewelry.

Sotheby's Credit

Sotheby's Credit

Brooch by SUZANNE BELPERRON, Crystal of Roche and Diamonds, circa 1930 Credit Sotheby's

VAN CLEEF ET ARPEL brooch, diamonds, 1930 Credit Sotheby's

 

There will also be a selection of historical jewelry, including a necklace of pearls that belonged to Joséphine de Beauharnais!

Joséphine Empress Jean-Baptiste Regnault around 1807
Joséphine the Empress
Jean-Baptiste Regnault
around 1807

 

According to David Bennett, President of Sotheby’s Switzerland and the Department of Haute Joaillerie in Europe and the Middle East: «We are delighted to present these magnificent jewels from the Dimitri Mavrommatis Collection, notably the fabulous «Graff Ruby», alongside outstanding creations by JAR. The remarkable quality of this collection pays tribute to Dimitri Mavrommatis» vision, discernment, and impeccable taste. The sale also features a magnificent selection of spectacular diamonds and sumptuous gemstones, as well as pieces of historical significance and fascinating provenance, offering collectors an excellent opportunity to acquire unique jewelry."

I therefore propose a very small selection of exceptional pieces that will be available for sale very soon..

 

The “Graff Ruby” is an 8.62 carat Burmese ruby; this stone combines exceptional characteristics, a purity, a brilliance, and above all, a fabulous “bird’s blood” red color!

© Sotheby's
© Sotheby’s

A 27.54 carat sapphire with a velvety blue color and great purity. This stone is remarkable not only for its origin but also for its weight exceeding 20 carats.

© Sotheby's
© Sotheby’s

A delight for this pair of earrings, a unique perfection for two identical D Flawless IIa diamonds, respectively 20.05 carats and 20.06 carats. These two stones were cut from a single rough of 162.02 carats!

© Sotheby's
© Sotheby’s

A spectacular 100.85 carat cushion diamond!

© Sotheby's
© Sotheby’s

A Burmese ruby of 14.45 carats

© Sotheby's
© Sotheby’s

A very beautiful brooch signed GRAFF Represents a flower. Set with yellow and white diamonds, including a 3.31-carat diamond.

© Sotheby's
© Sotheby’s

A wonderful creation by JAR for this pair of earrings adorned with sapphires, rubies and diamonds.

JAR © Sotheby's
JAR © Sotheby’s

A pair of earrings adorned with a fine button-shaped pearl, surrounded by rubies and diamonds, a creation by the talented jeweler JAR.

JAR Earrings © Sotheby's
JAR Earrings © Sotheby’s

It is rare to find jewelry from the JAR jeweler, so let’s take advantage of it! This pair of earrings is adorned with morganites, rubies, and diamonds.

JAR Earrings © Sotheby's
JAR Earrings © Sotheby’s

The famous snake-shaped bracelet watch BULGARI It is represented by two models. The first is made of gold, with red enamel and emerald-colored eyes diamonds. The mouth opens and reveals a dial signed Bulgari and Piaget.

Bulgari © Sotheby's
Bulgari © Sotheby’s

The second is set with blue enamel and diamonds; the snake’s head hides a Bulgari and Jaeger dial.

Bulgari © Sotheby's
Bulgari © Sotheby’s

A diamond pendant “The English Rose” that belonged to Queen Victoria.

This delicate diamond pendant dates from around 1876. Featuring a rose, it is adorned in the center with a pear-shaped diamond surrounded by cushion-cut rose-cut diamonds.

© Sotheby's
© Sotheby’s

And a magnificent necklace that belonged to Joséphine de Beauharnais, Napoleon Bonaparte's first wife and Empress of the French.

It consists of two rows of fine white pearls, holding seven important pear-shaped removable pearls.

 © Sotheby's
© Sotheby’s

A Tiare/Brooch by GEORGES FOUQUET, set with sea water, fine pearls and diamonds. Circa 1908.

Brooch/Tiare GEORGES FOUQUET, Aigues Marines, Fine Pearls and Diamonds, 1908 © Sotheby's
Broche/Tiare GEORGES FOUQUET, Aigues Marines, Fine Pearls and Diamonds, 1908 © Sotheby’s

Another Tiare in diamonds, around 1904.

Tiare Diamonds around 1904 © Sotheby's
Tiare Diamonds around 1904 © Sotheby’s

A brooch of VAN CLEEF and ARPELS, set with diamonds in platinum. Circa 1930.

VAN CLEEF ET ARPEL brooch, diamonds, 1930 © Sotheby's
VAN CLEEF ET ARPEL brooch, diamonds, 1930 © Sotheby’s

A very beautiful clip by René Boinv, platinum and with diamonds, 1930.

René Boinvins clip in diamonds 1930 © Sotheby's
René Boinvins clip in diamonds 1930 © Sotheby’s

A beautiful brooch by SUZANNE BELPERRON, in platinum, rock crystal and diamonds. Circa 1930.

Brooch by SUZANNE BELPERRON, Crystal of Roche and Diamonds, circa 1930 © Sotheby's
Brooch by SUZANNE BELPERRON, Crystal of Roche and Diamonds, circa 1930 © Sotheby’s

A lovely brooch CARTIER, in rock crystal, onyx and diamonds, 1922.

Cartier brooch, Crystal of Roche, Diamonds, Onyx and Platinum 1922 © Sotheby's
CARTIER brooch, Crystal of Roche, Diamonds, Onyx and Platinum 1922 © Sotheby’s

Same year for this brooch/pendant CARTIER, In coral, fine beads and diamonds.

Cartier brooch/pendant, Coral, Fine Pearl and Diamonds, circa 1922 © Sotheby's
Cartier brooch/pendant, Coral, Fine Pearl and Diamonds, circa 1922 © Sotheby’s

And finally this brooch from BOUCHERON Year 1940, in gold and platinum, set with sapphires and diamonds.

Boucheron brooch, sapphires and diamonds, 1940s © Sotheby's
Boucheron brooch, sapphires and diamonds, 1940s © Sotheby’s

 

It is a real pleasure to see and appreciate so many high-quality jewels, both for prestigious brands and for historical pieces.

There is truly something exceptional about Sotheby’s !

Sotheby's Geneva © Sotheby's
Sotheby’s Geneva © Sotheby’s
Sotheby’s Geneva, Beau-Rivage Hotel
13, Quai du Mont-Blanc, 1201 Geneva
+41 22 908 48 00

My thanks to Sotheby’s Presse France, Sotheby’s Press Geneva.

My warm thanks to Chloé Brézet, Alexandrine Hawawini and Lorella Marti.

sothebys.com

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Charlotte Wannebroucq, CNE-certified expert gemmologist
The author

Charlotte Wannebroucq

Gemmologist expert, member of the CNE-Art, and expert in signed jewelry. Twenty-five years of experience at the heart of Parisian jewelry, between the Carré Rive Gauche and Place Vendôme.
She signs the decryptions of collections, the analyses of stones and the estimates published in Esprit Joaillerie. Each piece commented on is examined in person, in the workshop, in the sales room or in the showroom.
  • Expertise

    Gemmology and signed jewellery

  • Member

    CNE-Art

  • Experience

    Over 25 years in Parisian jewellery