https://www.costerdiamonds.com/tours/book-a-free-guided-tour/
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Mr. Donny Griffioen is the Chief Purchasing and Director at Coster Diamonds. Therefore responsible for the diamonds we trade in. He has been working in the diamond industry from a very young age and is also the co-creator of the Royal 201. Also is he one of the most respected authorities on diamonds. In this 4 part series he will explain and tell you the parts of diamond valuation. Commonly known as the 4 C’s.
In the second part of this series he will explain everything there is to know about the cut of a diamond.
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Coster Diamonds is the oldest diamond polishing factory in the world. Located in the heart of Amsterdam between the Rijksmuseum and the van Gogh museum we welcome more than 400.000 visitors each year. The largest selection of unset diamonds, the finest diamond jewellery and tax-free shopping makes us a must-see hotspot for anybody visiting Amsterdam or looking for high quality diamond jewellery.
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[…] persistence pays off. Once you’ve succeeded to look correctly through the loupe, you can evaluate the shape of the diamond, the color and the […]
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