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Le Vian

Science in all its Splendor

Brilliance by Design

Lab-grown diamonds for every love, every kiss, forever.

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Discover the lab-grown diamond shape or cut that speaks to you.

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Why choose lab-created diamonds?

Lab-created diamonds come in a variety of classic and modern shapes and cuts. Explore your options to find a diamond that fits your style.

Frequently Asked Questions

From how they’re made to quality and value, get answers to your most frequently asked questions about lab-grown diamonds here.

Yes, a lab-grown diamond is a real diamond. It has the same optical, chemical, and physical properties as a diamond that is grown naturally under the earth’s surface. A lab-grown diamond is appraised using the same 4Cs (cut, color, clarity, carat) and can deliver the same fire, scintillation and sparkle as a natural diamond.

Lab-grown diamonds can be cleaned with a mixture of warm water and gentle soap or Kay’s fine jewelry cleaner. Frequency of cleaning depends on the type of jewelry and how often it is worn. For example, an engagement ring worn every day should be cleaned more often than a necklace only worn once in a while. When you’re not wearing your lab-grown diamond jewelry, store it in a dry place away from sunlight, air and humidity.  

Yes, lab-grown diamonds are responsibly sourced and conflict-free. They are also considered sustainable as they don’t rely on the earth’s natural resources to help them form.

Lab-grown diamonds are produced in a lab using specialized technology. The process starts with a diamond seed—a small sliver of carbon crystals. The diamond seed is placed in a chamber of extreme heat and pressure to mimic a natural diamond’s growing environment. The carbon coating helps the diamond crystalize and grow to a larger rough diamond crystal. The technology creates a diamond with the same optical, chemical, and physical properties as natural diamonds, produced in weeks or months what takes nature millennia. 

A natural diamond has historically maintained its value. However, since lab-grown diamonds are relatively new, it is unknown if they will retain their long-term value. 

A diamond may mistakenly be identified as a moissanite when using some diamond testers due to their similarity in thermal conductivity. Professionals can easily distinguish between the two gems due to their differing refractive properties, with moissanites being double refractive and diamond being single refractive.

Lab-grown is just one way to describe a diamond that is not created by the earth. Lab-created, man-made, engineered, and cultured diamonds are all different terms for a lab-grown diamond.

Because lab-grown diamonds have the same optical, chemical, and physical characteristics as natural diamonds, they cannot be distinguished even with a professional loupe under 10x magnification. That’s why KAY lab-grown diamonds 1/5 carat and larger are laser-inscribed with “lab-grown” or "lab -created" on the girdle. 
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