Gemstone: Alexandrite – a Colour Changer

So it seem those born in June are a little selfish by having not two, but THREE birthstones! As pretty as pearls and moonstones are, I’ve decided to tell you a little about Alexandrite because I’d never actually heard of this gemstone and WOW is it pretty!



Alexandrite was first found in April, 1834 in an emerald mine in the Ural mountains. It was named after Tsar Alexander I, who was ruler of Russia at the time. 


Alexandrite gemstones are extremely rare and desirable as they change colour based on the lighting. (wow!) Alexandrite has exotic green shades in daylight but an original one will change to a reddish purple colour when held under incandescent light… almost like a real-life mood ring!

Chromium gives alexandrite its colour and while, in most minerals, a trace element like chromium would provide only one colour to the mineral, but in alexandrite it gives it two!


Alexandrite is mainly sourced from Russia, Sri Lanka and Brazil.


Alexandrite is a type of chrysoberyl. It is composed of beryllium, oxygen and aluminium and is one of the hardest gemstones after diamond, sapphire and ruby. Alexandrite is 8.5 on the Mohs scale.




Alexandrite is valued based on the extent of colour change, cut and clarity. A finely cut Alexandrite can be as expensive as a high-quality diamond.



Click to discover more interesting facts about Diamonds or Emerald gemstones.
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