When it comes to choosing the best diamond, the common mistake is to think that the biggest is the best. But actually, the carat weight is to be taken into consideration last. In this article, we will help you to find the information you need to evaluate diamond quality and value.

The 4Cs: A diamond certification standard developed by the renowned Gemological Institute of America.

The 4Cs of diamond quality are criteria which jewellers all around the world are using to describe the characteristics of a diamond and to define its value.



COLOR: Diamonds are available in a variety of colors such as pink, blue and yellow. The GIA grades diamonds from D to Z, (D = the most colorless). The presence of a yellow tinge lowers the value of a white diamond. It is important to buy a diamond that balances colorlessness with price (D, E, F, G – eventually H).

CLARITY: refers to the degree of imperfections that are present in a diamond. These are measured by using a scale ranging* from Flawless (FL/IF) to Imperfections (I3). Be aware that only an expert can detect flaws with a microscope.

CUT: refers to the diamond’s symmetry, proportion and polish. This is the most important factor when choosing a diamond because it determines the degree of its brilliance.

CARAT: refers to the weight of the diamond. Each carat equals 0.2 grams and can be subdivided into 100 points.



At Pièces Uniques, we select our diamonds according to the GIA’s criteria to ensure that our creations are crafted using the highest-quality diamonds.

All of our diamonds from our Fine Collection are Ideal Cut- Color F or G- Clarity VVS1 or VS1. We offer exceptional quality diamonds such as Ideal Cut,  Color D and Flawless Clarity on request.

We also only work with selected suppliers based on strong ethical considerations.

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