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  • Lifetime free cleaning and polishing service

A complimentary 18K ring setting

185 years of craftsmanship. 750 years of Amsterdam. One gift that lasts.

Coster Creations

Have you always dreamed of creating your own diamond jewelry? At Royal Coster Diamonds, we make this possible with our concept called 'Coster Creations'. Our team of diamond experts is ready to guide you every step of the way to create your perfect match.

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Visit our Boutique

Welcome to our house of diamonds located at the Museum Square in Amsterdam.
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