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lab created diamonds

Engineered Diamonds

Lab created diamonds, also known as engineered or cultured diamonds, are grown in highly controlled laboratory environments using advanced technological processes that duplicate the conditions under which diamonds naturally develop when they form in the mantle, beneath the Earth’s crust.

Our lab diamonds are grown from the tiny carbon seeds of pre-existing diamonds. Advanced technology – either extreme pressure and heat or a special deposition process – replicates the natural method of diamond formation. Lab grown fancy colored diamonds are formed when small amounts of specific trace elements are present during the growth phase of the diamond, just like in nature.

Our lab grown diamonds are now readily available in a variety of colorless ranges. Cultured diamonds are also available in fancy colors that are considered very rare in nature, including popular hues of vivid fancy yellow. Fancy colored lab created diamonds sell at comparatively reasonable prices compared to their natural colored diamond counterparts.

benefits of lab diamonds

Eco friendly

Lab created diamonds are sustainable diamonds; they are ethically grown with minimal environmental impact.

Beauty & Rarity

Lab diamonds have the same physical, chemical, and optical properties as mined diamonds.


Lab diamonds offer excellent value, and are slightly more affordable than natural diamonds of comparable size and quality.

lab diamond search

Shop our extensive collection of lab created diamonds.


It is important to note the vast distinction between lab created diamonds and diamond simulants. Lab created diamonds are man-made diamonds that consist of actual carbon atoms arranged in the characteristic diamond crystal structure. Diamond simulants, such as cubic zirconia and moissanite, are diamond look-alikes and are not true carbon crystals. Simulants do not have the same chemical and physical properties as diamonds and therefore simulants sell at much lower prices than lab created diamonds. Learn more about moissanite vs. diamond.


All of our lab created diamonds display the same physical, chemical, and optical characteristics as natural diamonds, and exhibit the same fire, scintillation, and sparkle. Using professional gemological equipment, man-made diamonds are nearly impossible to differentiate from natural diamonds. The synthetic stones can only be identified with extensive scientific testing using specialized equipment. Lab created diamonds available for purchase should always come with a gem certification identifying them as laboratory-grown.

Brilliant Earth is dedicated to offering socially and environmentally responsible fine jewelry. All of our lab created diamond jewelry pieces are accompanied with a certificate of origin to provide assurance that they are ethically grown with minimal environmental impact.

Select your perfect lab created diamond by searching our online inventory. Or, search our selection of conflict free, ethically sourced natural diamonds. Once selected, lab created diamonds can be expertly set in the recycled gold or platinum setting of your choice.

How Lab Diamonds Are Made

Discover a behind the scenes look at the steps to create lab diamonds.


Discover the most popular settings to pair with manufactured diamonds.