Enchanting Lab-Grown Alexandrite by Chatham – Rare & Ethical

Lab-Grown Alexandrite

The chameleon of gemstones. Mined alexandrite is known for its remarkable color-changing properties, displaying hues of green in daylight and shifting to a purplish-red under incandescent light.

Alexandrite became Carroll Chatham's third lab-grown gemstone, making its debut in 1972. These lab-grown alexandrites possess the same chemical composition, optical properties and color-changing characteristics as their mined counterparts, exhibiting vibrant color shifts under varying light sources. Chatham lab-grown alexandrites are highly regarded for their quality, durability and responsible sourcing. They offer a more affordable alternative to mined alexandrite while maintaining the allure and beauty associated with this rare gemstone.

Shop Loose Lab-Grown Alexandrite

Chatham’s loose stone category is exclusively wholesale. We will gladly connect you with one of our Authorized Gemstone Retailers through our Concierge Service, or you can visit our Store Locator for a retailer near you. For a truly customized Chatham experience, book a virtual appointment with one of our expert team members, to ensure we fulfill your expectations.

Visit a Retailer

Book an Appointment

Custom Design Inquiries

The Chatham Standard

Quality That Matters

Color

Chatham lab-grown alexandrite is a transparent stone that shifts from a bluish teal in daylight to a reddish purple under incandescent lighting.

Truly spectacular!

Clarity

The standard clarity grade at Chatham is Gem Quality. That means, our lab-grown gems are free of any eye-visible inclusions.

Chatham lab-grown alexandrite is essentially flawless.

Cut

Each lab-grown gemstone is carefully hand-cut and rigorously inspected before reaching your hands. Chatham lab-grown alexandrite is faceted to optimize light reflection and refraction, maximizing the stone's brilliance.

the magic of alexandrite

The Color-Changing Phenomenon

From day to night, lab-grown alexandrite changes color with the ambience. It appears teal in sunlight and reddish purple under incandescent light as seen here.

Of course, just like mined alexandrite, each of our hand-cut alexandrite gems are unique and may vary slightly in color dominance and hue under different light sources.

Under Sunlight

Under Incandescent Light

The Gemstone Profile

Key Traits and Facts

Mineral

Chatham lab-grown alexandrite is the color-change variety of the Chrysoberyl mineral family.

Hardness

Beyond the natural beauty of alexandrite, this unique gem is ideal for everyday wear as it measures an impressive 8.5 hardness.

Birthstone Month

June birthdays get a little extra magic when a Chatham lab-grown alexandrite is in the box! Watch this rare gem magically transform under varying light sources.

Color Lore

A symbol of adventure and evolution, this color-shifting gemstone is the perfect gift for the free spirit who embraces life's beautiful transformations!

more options

An Array of Shapes

Chatham offers lab-grown alexandrite in a range of popular and traditional shapes cut to calibrated sizes.

We also accommodate custom cut orders in any size and shape (within reason). Beyond rounds, Chatham's lab-grown alexandrites are most commonly preferred in trillions, pears, and emerald-cuts.

For custom jewelry design services, contact us and we will turn your vision into reality!

CUSTOM DESIGN INQUIRIES

Chatham Lab-Grown Gemstones

Chatham grows a kaleidoscope of gemstones. For a closer look, click each lab-grown gem below to learn more about it’s beauty, quality, and color possibilities.