Valuation & Taxation Process

"Our diamond experts perform a professional valuation on your diamonds"


Valuation and taxation process - Diamond Brothers

Distinguish non diamond from diamond

We try to first check if the diamond is not CZ and other diamond stimulant material. If confirmed that it is a diamond we proceed with the pricing of the diamonds.

Diamond grading

For smaller parcels we sort it into corresponding group for shapes for example like in groups of round, princess, old cut, new cut , rose cut or broken.


Grading larger stones

For bigger diamonds we grade each diamond separately based on 4 Cs of the stone.

When looking at the proportions of a diamond, a trained eye would distinguish between an ideal cut and a deep or shallow cut.


More about the 4 Cs

We value your diamonds.
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  • IGI International Gemological Institute
  • HRD Hoge Raad van Diamant
  • GIA Gemological Institute Of America
  • AGS American Gem Society
  • LD Gems bvba Antwerp