Mr. Donny Griffioen is the Chief Purchasing also 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. He is also co-created the Royal 201 and he is one of the most hihgly respected authorities on diamonds. In this 4 part series he will explain and show you the parts of diamond valuation, commonly known as the 4 C’s.
In the first part of this series he will explain everything there is to know about carat and he brought some beautiful examples to show.
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.
[…] Carat: This is the weight of the stone, 0.02 grams per carat […]
[…] weight of the gem is referred to in carat. 1 carat is 200mg. A tanzanite’s gemstone with the same dimensions in width and length can have a […]
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