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Uncompromised Quality

Lab grown diamonds offer the same exceptional quality and beauty as mined diamonds, but at a much lower cost.

Innovative & Ethical

Created in labs, these diamonds are responsibly sourced and environmentally friendly, representing a new era of diamond creation.

Expertly Curated

Carefully hand selected by our diamond experts. We choose only the finest gems to ensure they meet our high standards of quality and beauty. 

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Equal Quality, Better Value

Lab grown diamonds are in no sense inferior to their natural equivalents. They are composed of the same molecular structure as mined diamonds, resulting in the same physical, chemical and optical properties.The sole and most important difference is in their origin. Whereas natural diamonds grow deep underground, their Lab grown counterparts are grown in a laboratory with the help of the most advanced technology. The results are more affordable and, above all, far more sustainable diamonds.

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Why do we value lab grown diamonds?

Natural diamonds form over the course of billions of years deep beneath the Earth's surface. The prevailing conditions of extremely high temperatures and pressure cause normal carbon molecules to transform into crystallized carbon, a raw diamond. Through volcanic activity, the rough diamonds have been brought further to the Earth's surface, hidden in kimberlite rock to be mined. Using the alternative lab grown approach, natural conditions are simulated in a laboratory, allowing the natural growth process to be replicated in a few weeks. In order to simulate these conditions, two different methods can be applied.

PRODUCTION METHODS

HPHT Process

The HPHT process uses a small diamond seed embedded in carbon, the element from which diamonds are composed. The diamond seed is exposed to extreme heat and pressure, replicating the natural growing conditions of a diamond. As the carbon dissolves, it forms around the seed. Finally, the carbon is cooled down and the diamond is formed.

CVD PROCESS

Using the CVD method, a diamond seed is placed in a vacuum chamber. The chamber then gets filled with carbon-rich gases and is heated to extremely high temperatures. Due to the heated environment, the gas transforms into a plasma, resulting in the release of carbon pieces. These carbon pieces then accumulate on top of the diamond seed, causing the diamond to grow.

Finally, the grown rough diamond is cut and polished to reveal its exquisite brilliance and sparkle, waiting to become the very heart of your piece of jewelry.

A Promise of Quality

As with mined diamonds, each stone is carefully examined and graded according to its color and clarity. All our lab grown diamonds are hand selected to be at least a VS+ clarity and color E-F, meaning they have very few inclusions and blemishes under 10x magnification and are radiant white in color. We ensure that each stone in our collection fulfills these criteria and is provided with the official HRD/IGI/ GIA diamond grading report if it is above a 0.50 ct weight. This report includes all the information required to classify the stone, known as the 4 C’s (Carat, Clarity, Color and Cut), used to determine the quality and size of your diamond.

THE DIAMOND 4 C's

CARAT

Carat measures a diamond's weight, with one carat equaling 0,20 grams.

CLARITY

Clarity refers to the presence of internal or external flaws in a diamond.

COLOR

Color grades assess the presence of color in a diamond.

CUT

Cut evaluates how well a diamond's facets interact with light.

OUR TEAM

Just like with all great products, it is the people who spark new inspiration and make ideas come to life. Behind the now world-renowned jewelry brands Leo Mathild and LM Studio stand the two founders, Leo Eberlin and Steven Neuman, blending their expertise and experience in the diamond trade from four generations combined to lead the thriving brands. Our LM team is fueled by a passion for stones and excellent craftsmanship, striving to create a timeless piece of jewelry to treasure your most memorable moments.