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Lab-Grown Gemstones | Kay

Lab-grown gemstones (also referred to as cultured, man-made, engineered, or lab-created gemstones) are identical to naturally occurring stones in every sense: chemically, physically, and optically. Just like lab-grown diamonds can be an affordable alternative to their natural counterpart, lab-grown gemstones can provide remarkable beauty at an exceptional value.


Learn more about how lab-grown gemstone jewelry and explore KAY's stunning selection, so you can find the perfect gift for that special someone—or a new addition to your collection.


How are Lab-Grown Gemstones Made?


The mineral composition of a lab-grown gemstone is made with a process similar to what nature does beneath the earth over millions of years. However, it is done in a lab in a fraction of the time and for a fraction of the cost of mining. The process for each type of gemstone starts with a slice of crystal that is cultivated for up to a year in conditions that mimic the earth's natural process. The result is a gemstone that grows much faster than it would naturally but turns out exactly the same.

Why Choose Lab-Grown Gemstone Jewelry?

The average person would be extremely hard-pressed to tell the difference between a natural and lab-grown gemstone. It takes a trained eye combined with high magnification and other instruments, and often, there is still not discernable difference. A lab-grown gemstone appears to be high quality at a price that’s significantly lower than its natural counterpart.

KAY Gemstone Comparison Natural Gemstones Lab-Created Gemstones
Is it a gemstone? Yes Yes
Source The earth A laboratory
Supply Finite and rare Potentially Unlimited
Independently certified Yes* Yes*
100% Conflict-free Yes Yes
KAY Responsible sourcing commitment Yes Yes
Price comparison $$$ $$
*Select styles & carat weight

Types of Lab-Grown Gemstones


Diamonds aren't the only gemstone that can be grown and turned into stunning jewelry. A wide range of colored gemstones can be cultivated in a lab and offer an affordable alternative to natural gemstones.

From birthdays to anniversaries to "just because", gemstones make the perfect gift for every occasion. Explore some of the most popular lab-grown gemstones to find the right style for you.

Gemstone Education from the Experts

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    Lab-Grown Diamonds
    Learn how lab-grown diamonds compare to natural and how to choose lab-grown diamond jewelry.
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    How to Clean Gemstone Jewelry
    Find out how to safely clean and care for your gemstone jewelry to keep it looking good as new.
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    Diamond Alternatives
    Learn more about lab-grown jewelry and explore KAY's stunning selection to find the perfect gift.