Diamonds

Information about the history of diamonds, our beautiful collection and the opportunity to see our diamond cutters at work.

What is diamond?

The word diamond comes from the Greek ‘Adamas’ meaning ‘invincible’, the hardest material found in nature. Diamonds are nature’s most precious product, grown deep in the earth’s crust, over eons of time. They are formed at extremely high temperature and pressure at depths of hundreds of kilometers within the earth’s mantle. Forged by nature between 990 million and 4.25 billion years ago, they were brought closer the surface through volcanic eruptions and are found in cratons, the oldest parts of the earth.

The word diamond comes from the Greek ‘Adamas’ meaning ‘invincible’, the hardest material found in nature.

Diamonds

Diamonds literally are as old as life on this planet itself, making it all the more precious to own such a rare wonder of nature. It is the transformation of pure carbon into these rare treasures that will determine how they will be cut and polished. It is the stone itself who decides how it will be shaped.

The value of the diamond is determined by four different factors: the cut, weight, color and clarity.

The 4 C's

These four properties together determine the value of a diamond. The size, color and clarity of each rough diamond is determined by Mother Nature. Ultimately, it is the craftsmanship of our master grinders that makes a rough diamond an absolute masterpiece.

More explanation about the 4C's

Carat

Read more about carat

Color

Read more about color

Clarity

Read more about clarity

Cut

Read more about cut

GASSAN adds a fifth C to this standard list. The C of Confidence, confidence. This way you get an internationally guaranteed certificate with every diamond.

Certificate

GASSAN adds a fifth C to this standard list. The C of Confidence, confidence. This way you get an internationally guaranteed certificate with every diamond. Our diamond certificate is the confirmation of the GASSAN business ethic. Using high technologic equipment, skilled gemologists carefully verify, examine and certify each diamond according to international standards. GASSAN’s in-house, fully equipped Amsterdam Diamond Lab (ADL) provides ADL certificates that indisputably asserts the qualities of your diamond either loose or set in jewellery. In addition, we supply diamond certificates from world-class gem labs such as the Gemological Institute of America (GIA) and HRD Antwerp.