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Diamants et poires, et l'équipe de Joaillerie chez Koller

A FRESH LOOK:
THE NEW JEWELLERY TEAM


IN OCTOBER 2024, WE WELCOMED JAKOB ZEIJL AS THE NEW HEAD OF OUR JEWELLERY DEPARTMENT.

He completed his studies in art history in Maastricht and London with a master’s degree, then completed his gemologist training in Idar-Oberstein. From 2021 until last year, he successfully managed the jewellery and watches department of a large Cologne auction house. Jakob Zeijl works alongside Damian Fürer, who has been with our Jewellery department for almost a decade, for valuations and auction consignments. Melinda Cusumano, Isabelle Koller and Sonja Portuondo assist the two with cataloguing and administrative tasks. Our jewellery department organises four auctions a year and has been a mainstay of our company for many decades. What sets our jewellery auctions apart from many others is that each significant gemstone is additionally examined by independent external laboratories, providing an additional layer of confidence for buyers.

Mandarine organge and jewllery at Koller
Diamond necklace at Koller

The jewellery and gemstone market, which is of course influenced by fashion, is constantly evolving. Certain preferences change, but classic brands never really go out of style. Bulgari is very popular at the moment, as are high-quality emeralds. Then there are classics like rubies and sapphires, which, if untreated and from the right origin, can fetch very high prices. Brands like Cartier, Van Cleef & Arpels and Tiffany & Co. are always popular. Products by Hemmerle are increasingly offered at auction and currently fetch very good prices. For some years now, demand has also been growing for historical jewellery and signed vintage items.

Natural pearl and diamond necklace
NECKLACE

Natural pearl and diamond necklace,
probably by Cartier, London, circa 1920.
Sold for
CHF 400 000
The jewellery specialist at Koller examines a precious gem
Pink diamond


PINK DIAMOND

Fancy intense purplish-pink
diamond of 1.21 ct.
Sold for
CHF 115 000
Burma ruby


BURMA RUBY

Ring wiht Burma ruby and diamonds.
Ruby of 4.19 ct.
Résultat :
CHF 185 000
Natural pearl necklace, circa 1900

COLLIER

Natural pearl necklace, circa 1900.
Résultat :
CHF 175 000
Diamonds


DIAMONDS

Nine unmounted diamonds
totalling circa 26.86 ct.
Sold for
CHF 230 000

«La beauté est la seule valeur que le temps n’altère pas. Les systèmes philosophiques se désintègrent comme du sable, les dogmes religieux changent souvent, mais ce qui est véritablement beau réjouit éternellement; c’est un trésor pour l’éternité.»


OSCAR WILDE

Diamants et poires chez Koller
Émeraudes colombiennes chez Koller


ÉMERAUDE

Collier émeraude et diamants.
Émeraude colombienne de
41.08 ct. Diamant de 1.51 ct.
Résultat :
CHF 215 000


ÉMERAUDE
CABOCHON

Grande émeraude
cabochon de 176.24 ct,
Colombie.
Résultat :
CHF 215 000


ÉMERAUDE

Émeraude colombienne
de 32.45 ct.
Résultat :
CHF 75 000
Jakob Zeijl, Koller Ventes aux Enchères

CONTACT POUR
INFORMATIONS ET
CONSIGNATIONS :


JAKOB ZEIJL

Directeur du département
Joaillerie

zeijl@kollerauctions.com
+41 44 445 63 60