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TNG Swiss Watches free strap voucher with your online purchase

We're proud to announce TNG Swiss Watches is now available in our webshop. To celebrate this memorable moment, TNG Swiss Watches offers you a free strap voucher with the online purchase of a TNG watch.





Vogue Fashion's Night out was yet again a successful event

The fifth Vogue Fashion's Night Out took place at Thursday September 8th in the P.C. Hooftstraat in Amsterdam and was yet again a successful evening. Just like the years before, we can look back at a great evening. This year the evening in our Gassan Boutique was made possible by the Danish jewelry brand OLE LYNGGAARD COPENHAGEN. 

Jaeger-LeCoultre introduces Atelier Reverso

In 2016 Jaeger-LeCoultre introduced Atelier Reverso. With this new concept the possibilities for personalization are expanded.



Jaeger-LeCoultre presents the second series of  the Reverso watch in tribute to Vincent van Gogh

Since 1931, the year the Reverso watch was created, its emotional impact has remained as powerful as ever. This undisputed style icon elicits the same wonderment decade after decade and is often used to paying homage to artists. For this occasion, Jaeger-LeCoultre and the Van Gogh Museum in Amsterdam are proud to present the second series of the Reverso à Eclipse watch in tribute to Vincent van Gogh, featuring an enameled miniature of the Selfportrait as a painter (1887-88) on the dial. This masterpiece is one of Van Gogh’s most famous paintings and to this day the piece is presented in the permanent collection of the Van Gogh Museum in Amsterdam.

New Freqerique Constant Vintage Rally

The Swiss watch manufacturer Frederique Constant, founded in 1988 by the Dutch Peter Stas and Aletta Bax and recently sold to Citizen, presented a new model of their Frederique Constant Vintage Rally.



The Omega Speedmaster Grey Side of the Moon ‘Meteorite’ is unique

During BaselWorld 2016 Omega presented the Omega Speedmaster Grey Side of the Moon ‘Meteorite’. A model that’ll be available later on this year and non of these watches will be the same.

Re-opening Choices by DL store

On the 30th of May the Choices by DL flagship store was officially re-opened by Debora Huisman-Leeser, designer of the self-titled jewellery collection. At the same time the new advertising campaign was presented, starring international supermodel Yfke Sturm as the face of the brand.



Benno Leeser named Knight of the Order of Orange-Nassau

On 26 April this year, the annual Lintjesregen (‘rain of titles’ on the monarch's birthday) was held, the day on which several people receive a royal distinction, decorated for their exceptional work in the community. This year, on the occasion of Koningsdag (King’s Day), a total of 2,835 of these royal honours were bestowed in the Kingdom of the Netherlands. Five of these honours were awarded to people who live abroad.





A new lightweight by Breitling: the Breitling Avenger Hurricane

During BaselWorld 2016 Breitling presented a new model, the Breitling Avenger Hurricane. A new eye-catcher, due to it's specifications.





Chinese New Year Celebration at Gassan Dam Square

Last night was great interest the 'year of the monkey' inaugurated. Every year Gassan in cooperation with the Yip Group festive ushering in of the Chinese New Year on the Dam in Amsterdam.

Salon International de la Haute Horlogerie 2016

From the 18th until the 22nd of January last the Salon International de la Haute Horlogerie (SIHH) 2016 took place in Geneva. During this event several Swiss watch brands showcase their latest collections.



Of course you are always welcome at any of our locations Gassan Diamonds, even during the holidays. Check out the opening for the holidays in 2015. We wish you a merry Christmas and a happy, healthy and sparkling 2016 now!

Masters of LXRY 2015

From 10 to 14 December of the year again; Masters of LXRY.

Gassan chooses Fairtrade gold

Amsterdam, 16 July 2015 – Gassan Diamonds, the largest jeweller in the Netherlands, is switching over to Fair Trade gold from certified mines in Africa and Latin America for its Dutch collection. "This is a fantastic step and particularly good news for the small-scale miners who, as a result, will earn better wages and work under better conditions', said Peter d'Angremond, director of the Max Havelaar Foundation.



This year Gassan participated in the Super Card Sunday event at the Assen race track for the first time.



New contract NBTC

On Tuesday May26th 2015 Jos Vranken (general director NBTC Holland Marketing) and Benno Leeser (President-Director Gassan) signed the contract for their joint promotion and marketing for the year 2015.

Opening Gassan Boutique

A large gathering attended yesterday’s official opening of the Gassan Boutique at P.C. Hooftstraat 84. Under the watchful eyes of Debora Huisman-Leeser and David Bijlsma, Frank de Boer and John van den Brom cut the ribbon to make the opening of the boutique official.



Exclusive arrangement in collaboration with Gassan

Exclusive arrangement in collaboration with Gassan! The 125-year-old inspiration from Van Gogh is this year celebrated through special Van Gogh Package.

Exhibition La Tradition Breguet

Exhibition La Tradition Breguet A world premiere at Gassan Diamonds! Breguet opened yesterday during an exclusive dinner at Gassan the first exhibition of the La Tradition collection and novelties presented at Baselworld, the main exhibition.

Gassan Boutique

Amsterdam , April 13, 2015 From the Easter weekend , the P.C. Hooftstraat , a new jewel in the street at . Gassan diamond namely opened a new exclusive Gassan Boutique with a variety of watch and jewelery brands. The official opening will take place May 21



Tour Guides Event

Op 17 maart jl. vierde Gassan samen met de Amsterdamse toeristenindustrie de kick-off van het toeristenseizoen 2015. De avond stond in het teken van Gassan’s online wereld met nadruk op de E-Boutique.

SALON D’AMSTERDAM DE LA HAUTE HORLOGERIE 2015

With great interest last night the 7th edition of the Salon d'Amsterdam de la Haute Horlogerie started at Gassan ...



Van Gogh Collection

In cooperation with the Van Gogh Museum Gassan developed 4 collections to honour the Dutch artist

Launch 25th issue of Heroes at Gassan Diamonds

Last Monday, the 25th issue of Heroes was launched at Gassan Diamonds , the location where the first issue of the magazine was presented .

Salon International de la Haute Horlogerie

Last week was the Salon International de la Haute Horlogerie (SIHH) in Geneva. At this event every year showcased the latest collections or several at Swiss watch brands.



Masters of LXRY 2014



Press Release Princess Caroline of Monaco

Gassan Diamonds welcomed Her Royal Highness Princess Caroline of Monaco

The premiere of Gooische Vrouwen 2

The DeLaMar was last night marked the premiere of Gooische Women 2. Two leading players of the Gooische Women wore during the evening jewels of Choices by DL and Gassan.







New contract Gassan Amsterdam and Marketing 2014

The Gassan Group Marketing and Amsterdam signed on April 30th, the 2014 contract for their joint promotional and marketing activities ...

Choices by DL - 5 year anniversary

Discover the latest Choices by DL collection! In December exists the beautiful jewelry brand Choices by DL, designed by Deborah Huisman-Leeser, already 5 years.

Record number of visitors: 400,000

It was an excellent year for Gassan Diamonds once again with a record number of visitors. In 2013 the historical diamond attracts more than 400,000 visitors from around the world.