Diamond Guide

When evaluating whether the diamond jewellery or loose diamond that you are considering buying actually matches its price, it is an advantage to know something about the quality of the diamond. Learn more about diamond quality in Hartmann's diamond guide.

Diamond quality

Around the world, diamond quality is graded according to the 4 Cs: Carat, Cut, Clarity and Colour. Sometimes a fifth C is mentioned, which stands for Confidence.

Learn more about diamonds

The shop’s opening hours

View detailed opening hours
  • Monday 10:00-17:30
  • Tuesday 10:00-17:30
  • Wedensday 10:00-17:30
  • Thursday-Friday 10:00-17:30
  • Saturday 10:00-14:00

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