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Education

The Royal Diamond Education Center

A diamond is expensive and if you are looking for the best quality/price combination it’s important to get well informed. Let us guide you through the mystical world of diamond valuation.

Education

A brief history of diamonds

The best place to start is by explaining the origins of diamonds. Where do diamonds come from and how did these shiny pieces of hardened dirt become so popular?

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The 4 C's

Part 1. The Carat of a diamond

Carat actually stands for the weight of a diamond. But did you know where the term ‘carat’ comes from? Who best to explain the details of each ‘C’  than our own Chief Purchasing Director, mr. Donny Griffioen?

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The 4 C's

Part 2: the Cut of a diamond

The value of a diamond is determined by the 4 C’s. Cut, Color, Clarity and Carat. In this video Donny will explain the different “Cut’s” a diamond can have.

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The 4 C's

Part 3. The color of a diamond

The third ‘C’ in the world of diamond valuation stands for Color. In this video Donny will show you some stunning examples of the differences in color shading and some unique natural colored diamonds.

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The 4 C's

Part 4. The Clarity of a diamond

Last but not least, the clarity of a diamond is the fourth “C” and very underrated. In this video you will see a river pure flawless diamond as well as some diamond that may have more carat, but also more imperfections.

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Education

The Royal 201

The brilliant cut has been known as the most optimal diamond cut. Until the Royal 201 was developed at the end of the 90’s. where a brilliant reflects light through 57 facets, the patented Royal 201 reflects light through 201 facets creating the optimal sparkle. Learn all about the most sparkling diamond cut in the world.

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Education

On diamond certificates

Donny mentioned it briefly in his video explanation, but you should always buy diamonds that come with a certificate. In this article we will show you why they are so important and which are the most reliable.

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Education

Why buy a diamond?

Probably the most important question of all. Diamonds are expensive, very small and if it’s true love you don’t need a symbol to prove it. So why even bother buying one when you can buy 2000 boxes of chocolate for the same price (and everybody loves chocolate too!). Well, you might want to read this if you are still in doubt.

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Education

The 8 diamond guarantees

So now that you’re ready to buy a diamond you can just hop online and buy one at your local diamond jeweler for a few bucks or you can get them at the source, from the most reputable diamond polishing factory in the world and handcrafted from rough diamonds with love, precision and with the same passion that created the Koh-I-Nor for the British crown jewels, the Cullinan and many, many, many more royal diamonds. Read about our 8 diamond guarantees and hear our CEO explain why he has been working here for more than 30 years.

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Coster Diamonds