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  • Lifetime free cleaning and polishing service

At Royal Coster Diamonds, we offer our exclusive “Resparkle service” to restore your treasured jewelry to its original brilliance. This service is available for all products bought at Royal Coster Diamonds. Our skilled goldsmiths use the latest techniques and equipment to make your jewelry shine like never before.

Book your appointment by filling in the form above and visit us at Paulus Potterstraat 2 in Amsterdam for your appointment. While you wait, you can explore the rich history of Royal Coster Diamonds and discover over 180 years of exceptional craftsmanship.   

Terms & Conditions

Make your jewelry sparkle again

Expert Assessment
Every piece of jewelry that comes in gets a thorough inspection from our goldsmiths. This way they can decide the exact treatment that is necessary.
Polishing Perfection
First, the item gets polished on one of our machines. Signs of wear are slowly removed. Next, your piece of jewelry is placed into an ultrasonic bath which removes all the dirt.
Timeless Elegance
Your beloved piece of jewelry has been skillfully restored to its original brilliance. With every detail polished and perfected, it now radiates like new.