Cyber Monday 2026

When the weekend's excitement settles, one more moment of opportunity remains. Cyber Monday 2026 at Royal Coster Diamonds is your final chance of the season to bring home something exceptional, all from the comfort of wherever you happen to be. No crowds, no queues, just timeless craftsmanship a few clicks away.

Masters in diamond craftsmanship since 1840, we believe an online discovery can be every bit as considered as a visit to our boutique. A diamond chosen on a quiet Monday evening carries the same fire, the same heritage and the same promise of permanence as one admired in person. Cyber Monday is simply the moment when that brilliance becomes a little more attainable.

Explore Our Finest, From Anywhere

Our webshop opens the doors of our Amsterdam boutique to the whole world. Take your time browsing the radiant Rainbow collection, lingering over the gentle glow of a Luna pendant, or imagining a Tennis bracelet catching the light on your own wrist. For those who appreciate precision and heritage, our curated selection of watches brings generations of mastery within easy reach.

Searching for a gift, or marking a milestone of your own? Our Canals collection carries the quiet romance of Amsterdam in every line, while our Birthstone jewelry lets you celebrate something deeply personal with a gem that is uniquely meaningful. Each piece is crafted with a dedication that an online offer only makes more rewarding to discover.

Plan Ahead, Click with Confidence

The smartest Cyber Monday choices belong to those who know what they are looking for before the offers go live. By exploring our collections in advance and saving the pieces that catch your eye, you can act with calm and clarity the moment the day arrives, rather than scrolling in a last-minute rush.

Every Royal Coster creation is crafted with the same dedication that has earned the trust of more than a million customers worldwide, and each diamond carries the heritage of the oldest diamond factory still in operation today. Not ready to wait for Monday? Enjoy 10% off your first order today with the code WELCOME, and start exploring all that awaits you.

Be the First to Know When Our Offers Go Live

When our Cyber Monday offers are ready to be unveiled, we would love for you to be among the first to see them. Subscribe to our newsletter and join the Royal Coster circle, with early access to exclusive deals, new collections and a little inspiration delivered straight to your inbox.

This Cyber Monday, choose more than a quick deal. Choose a piece of brilliance that will be treasured long after the season has passed.

Sign up today, and be ready when the offers begin.