Coster Diamonds

Coster Diamonds is one of the city’s oldest operating diamond firms founded back in 1840. Their master craftsmen have been making exquisite works of art for over 160 years.

Coster Diamonds is one of the oldest operating diamond firms in the world, founded in 1840. Our master craftsmen have been making exquisite works of art for over 160 years.

Hundreds of thousands of visitors come to see our master diamond cutters at work. The free guided tours are given in more than 25 languages by an accommodating staff who will explain everything about diamonds in great  detail.

After the tour, visitors can browse around in our spacious showrooms. Here they see an extensive collection of loose and set diamonds and one of the largest collections of large stones of more than 1 carat. Tax-free shopping is available for residents of countries outside the European Union, which also includes the purchases in our gift shop.

A diamond can be valued by the 4 C´s: Carat, Color, Clarity and Cut.  At Coster Diamonds, we are known for adding the fifth C to this list; the C for Confidence.  Because when you are looking to purchase the best quality diamond at a reasonable cost, you need to confident you buy them at a respected and trustworthy supplier.

Our customers recognize and appreciate the quality and expertise of our staff and trust us when purchasing one of the most beautiful items a person can buy. And we are glad to assist, in any way we can.

Coster Diamonds is located between the Rijksmuseum and the Van Gogh Museum. Just opposite of our main entrance is the parking garage for coaches. Parking is free of charge during your visit at Coster. The opening hour are daily from 09.00 to 17.00, including weekends. Documentation, such as folders and introduction-cards are available and can be obtained by contacting Coster Diamonds.

Diamond Museum Amsterdam

Amsterdam has a strong heritage as The International Centre of diamond polishing and diamond trading for more than 400 years. The museum takes you on a journey that began 3 billion years ago, 200 kilometers under the surface of the earth and which ends in the ring on one’s finger. Do not miss this fascinating story. See the process of transforming a rough stone into a sparkling gem. Distinguish between a real diamond and an imitation. See the smallest diamond in the world and admire the exhibition of crowns, the symbol of royal power and worldly glory. There are examples from all over the world and from all ages. The Diamond Museum Amsterdam is located next to Coster Diamonds, one of the oldest still operating diamond factories in Amsterdam. 

For more information contact Ronald Koster or visit

2-8 Paulus Potterstraat 
Phone: + 31 (0)20 30 555 55 
Fax: + 31 (0)20 30 555 56 

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Latest News

Vacature: Projectmanager Riviercruise

11-2-2018 17:56:19

ACP zoekt een projectmanager: Heb jij ervaring met het managen van projecten, opstellen en uitvoeren van marketingplannen en organiseren van activiteiten én heb je een fascinatie voor cruisevaart? Bij Amsterdam Cruise Port hebben wij een vacature als projectmanager riviercruise. In deze rol ben je verantwoordelijk voor het realiseren van de projectdoelstellingen van ACP. Ben jij de marketinggeneralist met ervaring die ook dol is op details en onderzoek? Reageer dan snel!


Onderzoek naar kerncijfers zeecruise 

30-1-2018 10:47:02

ACP heeft economisch onderzoeks- en adviesbureau Decisio opdracht gegeven om een analyse uit te voeren van de feiten en data over zeecruises in Amsterdam. Het beoogde eindresultaat is een eensluidend en helder overzicht te komen van kerngegevens over aantallen zeecruises en bestedingen in de regio Amsterdam. De basis voor dit eindresultaat zijn bestaande studies.

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