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Rare Color Change Alexandrite - GemSelect

About Color Change Alexandrite

Color Change Alexandrite is one of the rarest of all colored gemstones in the world. Alexandrite is famed for its ability to color change, typically from green in daylight to red under incandescent light. Alexandrite is rarely found in larger sizes; anything over 1 carat is a rarity and is easily more valuable than sapphire, ruby or emerald similar in weight comparison.

Alexandrite is a variety of chrysoberyl and so it has an excellent hardness of 8.5 on the Mohs scale, placing it right behind sapphire and ruby. Alexandrite is colored by chromium, the same element responsible for the red in ruby and the green in emerald. It is the chromium which gives it the emerald-green hue when viewed under natural daylight.

Watch the video below to see the color change affect:

To shop and view Alexandrite gemstones, visit us at You can review the largest selection of colored stones online. Click here to view only Alexandrite stones.

We hope you enjoyed our short introduction to one of the worlds rarest gems! Please feel free to comment or send us any questions to our email:

All the best in gems,

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