At the heart of it since 1840.

At the heart of it. Since 1840.

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Why not explore our new Luna Collection?

At Royal Coster Diamonds we strive to provide you with the best possible service. If you have any questions regarding diamond jewelry or if you want to contact a diamond consultant, you can reach us via the following:

Phone: +31 020 305 5555
Email: support@costerdiamonds.com
WhatsApp: +31629705658

Monday to Friday from 09:00 - 17:00.

7 days a week

Get In Touch

Email, chat or call to consult us on your next purchase.

VISIT US

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Visit your favorite items at our Flagship location in Amsterdam.