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Lab-grown diamonds, a major innovation for tomorrow’s jewellery.

MAZARIN diamonds are developed in the laboratory.

They have exactly the same properties as diamonds of natural origin. Only their origin differs: a lab-grown diamond is the result of a complex technological process reproducing the prodigious pressure and temperature which gave rise to mined diamonds.

MAZARIN rigorously chooses their diamonds according to the four criteria which determine the value of a diamond, called the 4 Cs: its color (colour), its purity (clarity), its size (cut) and its weight in carats.


1. What is a lab-grown diamonds?

2. The “4Cs” to understand a laboratory certificate

3. How to differentiate a lab-grown diamonds from a natural diamond?

4. Why choose a lab-grown diamonds?

What is a lab-grown diamonds?

Lab-grown diamonds are created thanks to an advance man-made process involving the reproduction of the extreme conditions necessary for the carbon crystallization process. This complex technology allows the formation of rough diamonds: exceptional, rare and unique stones. Composed of 100% carbon, the term “synthetic” is misleading, since they have exactly the same physical, chemical, optical and aesthetic properties as a natural diamond.

As in nature, each lab-grown diamonds has its own growth pattern and develops unique inclusions. They are valued according to the same 4C criteria - color, carat, cut, clarity - guaranteeing the quality and uniqueness of a diamond.

These characteristics are reproduced on a recognized and international gemological laboratory certificate (IGI, GIA in the United States or HRD in Europe)

The “4Cs” to understand a laboratory certificate


The whiter a diamond, the rarer and therefore valuable it is. The international grading scale starts at D to qualify the purest diamond and follows the alphabetical order up to Z for the most colored or « tinted » diamond. The diamonds in the MAZARIN collections essentially belong to categories D, E and F.


It is determined by the number, size, nature and position of the imperfections which, inside or on the surface of the stone, act on the passage of light. The international system measures it in six main categories: FL (no defect), IF (no visible defect), VVS (very very small inclusions), VS (very small inclusions), SI (small inclusions) and I (visible inclusions on the outside). naked eye). The diamonds in the Mazarin collections belong to the higher categories.


It is chosen in such a way as to increase the brilliance of the stone obtained by cutting each facet with extreme precision. For each diamond, Mazarin looks for the cut whose proportions, symmetry and polish will give it the best shine, favouring in particular pear, emerald and brilliant cuts.


It is the unit of measurement of the diamond, or 0.2 grams for 1 carat. The value of the stone varies according to its caratage, but also its rarity.

How to differentiate a mined diamond from a lab-grown diamond?

The term “synthetic” or “laboratory”, “cultured” is confusing. French law imposes the term « lab-grown diamonds» to differentiate them from mined diamonds. Yet a diamond is a diamond, whether it is formed in the laboratory or underground.

No synthesis process takes place, Man does not "manufacture" diamonds, he only recreates the conditions necessary to generate a natural phenomenon: the crystallization of carbon.

The term synthetic has also been banned in the United States, because man cannot synthesize a single component. Synthesis implies plurality. Diamond being composed only of pure carbon, it cannot be synthesized.

Why choose a lab-grown diamond?

A true technological feat, this diamond is a major innovation for tomorrow’s jewellery.

It is free from seabed and earth’s crust exploitations, destruction of biodiversity, but also of any conflicted diamonds issue or poor working conditions.