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How To Understand Diamond Quality

Learn more about diamonds

When considering purchasing a diamond, it is critical that you understand as much as possible about how diamonds are classified.

Read our guide to understand diamond quality based on the 4c’s of diamonds: diamond carat, diamond colour, diamond clarity, diamond cut.

How to understand diamond quality

frequently asked questions about buying diamonds online

When determining if an online jeweler is reputable, we recommend to read their online reviews. Customer reviews are critical to the success of an online engagement ring store, and they may provide valuable information into a jeweler’s level of service, quality, and value.


The round brilliant cut is the most common diamond cut for engagement rings, accounting for over two thirds of all diamonds sold today.
The Round Brilliant Cut diamond has 58 facets (including the culet) and provides great white light reflection, or brightness. Brilliant round cuts have the most facets of all diamond shapes, which is the reason why they have the highest level of light reflection and refraction.
For three key reasons, a round diamond will cost more per carat than other, fancier shaped diamonds:

  1. A considerable portion of the rough stone must be cut away in order to achieve the fire and brightness of the round shape.
  2. It takes a lot of time and skill to cut the ideal round diamond.
  3. Its popularity and strong demand

The actual cut of a diamond, rather than the shape it is cut into, is the most important deciding element in its quality. Round diamonds, on the other hand, maximize light return, making them look more dazzling and of greater quality.

The value of a diamond is mainly determined by the so-called four Cs.
CARAT: the weight of the diamond
COLOUR: the whiter the diamond, the rarer it is and therefore the higher its value.
CLARITY: the purer the diamond, the higher its valuation.
CUT: the way the stone reflects light, which gives it the brilliance of a designer diamond.

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High ratings on the 4Cs imply a higher diamond quality of course, especially with regard to the Cut. However, if you are unable to find a diamond that fits your budget and requirements you can accept a little lower quality score for one of the 4c’s, or even purchasing a very slightly smaller diamond.

It may be difficult to determine whether you are paying the best price for your diamond if you are not a specialist in the field, which is why we suggest you seek expert advice. Purchasing a diamond should never be rushed, especially when it comes to something as important as an engagement ring.

The main advantage of buying a diamond online is that as it is now an established online business, you will find much lower prices than in local jewellery shops. Moreover, having the possibility to buy directly from a member of the Belgium diamond bourses implies a lower price and a wider range of options to choose from.

There are several diamond laboratories that provide certification, but not all laboratory reports are equivalent. We strongly recommend buying only GIA, HRD and IGI accredited diamonds in order to obtain an optimal level of quality assurance.

Conflict diamond is a term used to describe diamonds that are mined in war zone countries and traded unlawfully to finance the conflicts, or any diamond that negatively impacts the environment and human society. Every diamond we sell is certified conflict-free in compliance with the Patriot Act, the Kimberley Process, and United Nations resolutions.

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