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DOWNLOAD PDFUnique polishes & diamond products
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How we Created The Royal 201
In 2007, our own Donny Griffioen and Bobby Low created the Royal 201. Our very own worldwide patented diamond cut. Praised for its sparkling brilliance. The Royal 201 is a...
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Royal Coster Welcomes Baby Koi Diamond
About ten years ago, people found an unusual diamond in Congo. The diamond was not only special because of its size, of over 60 carat, but mainly because of its...
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How we Polished The English Dresden
The English Dresden In 1857, by the River Bagagem in the state of Minas Gerais, not far from the discovery site for the Star of the South, a flawless 119.50...
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How we Created Queen Juliana’s Diamond Watch
The Netherlands has a long history of kings and queens. As Royal Coster Diamonds, we’ve always had a warm bond with Royals from all over the world. Based...
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How we Polished the Famous Star of the South Diamond
The 128.48 carat Star of the South is one of the most famous diamonds in the world. This cushion cut diamond has a Fancy Light Pinkish Brown color and VS2...
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How we cut the Koh-I-Noor for the Queen of England
In 1852, our Master Polishers Fedder and Voorzanger went to London to repolish the Koh-I-Noor for Queen Victoria. This diamond is still the center stone in the...
