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Alexandrite Gems

When the sun shines, alexandrite is green. By candlelight, it’s red. How cool is that? Chatham crystals of alexandrite take months to grow. We’re thrilled to make this rare gem available for people like us who have always wanted one.

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Alexandrite is your gem because...

You love red and green

You are born in June

You have a creative imagination

You have Russian heritage

Your anniversary is in June

Your child’s birthday is in June

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Chatham Lab-Grown Alexandrites

Since Chatham has experience growing emerald crystals, we always wanted to try growing alexandrite crystals as well. Alexandrites are so difficult to grow that it took us several years of effort to perfect the process. Our Chatham Created Alexandrites are very close to the Russian ideal. We start with a naturally mined seed of Russian alexandrite and use a lot of chromium in the solution to make sure that the color change is dramatic.

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The ultimate color-change gem

A birthstone for June

The 45th or 55th anniversary gem

Mined in Russia, Sri Lanka and Brazil

Named after Czar Alexander II

A variety of chrysoberyl

Great for engagement rings

with an 8.5 hardness

About Alexandrites

Emerald by day. Ruby by night. Alexandrites are a rare variety of the mineral chrysoberyl that changes color from bluish-green in daylight or fluorescent light to brownish or purplish red in incandescent light.

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