• Enjoy 10% off your first order with code WELCOME
  • Lifetime free cleaning and polishing service
  • Up to 30% discount on selected watches

Become a true expert

  • Hands-on polishing
  • Personal coaching
  • Certified diamond to keep
  • Drinks & goodie bag

Duration: 240 minutes
Price: €475

More about the Masterclass

Become a diamond polisher for a day, guided by one of the Royal Coster master polishers. You take a seat at the polishing table to transform a rough diamond into a brilliant one. This exclusive 4-hour workshop is designed for one or two people. You receive personal coaching and a unique insight into true craftsmanship. At the end, your polished diamond is yours to take home, complete with an official certificate. You can also choose to have it set in a custom piece of jewelry. 

The masterclass includes refreshments, a goodie bag and a certificate of completion. 

Request your Diamond Masterclass and discover the art behind true brilliance.