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Complimentary 18K ring setting, just for you

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

Our birthday, our treat

This summer marks Amsterdam’s 750th anniversary, a milestone worth celebrating. At Royal Coster Diamonds, we have our own reason to raise a glass: in 2025, we celebrate 185 years of craftsmanship in the heart of the city. To honor this moment, we offer you a complimentary 18K gold ring setting with the purchase of a loose diamond starting from €1.500.

A timeless gift, available for a limited time.

To mark this double milestone, we are giving something lasting in return. This summer only, when you purchase a loose diamond from €1.500, you will receive a complimentary 18K gold ring setting from our Coster Creations collection. Your diamond will be set live in our in-house atelier while you enjoy a glass of champagne.

Please note: this exclusive offer is only available for a limited time.

Terms and conditions apply*