Alexandrite The Colour Changing Gemstone.

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Alexandrite The Colour Changing Gemstone

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Alexandrite is one of those rare gemstones that
can change its colour, much like a chameleon.
When exposed to sunlight, the gemstone appears in
varying shades of green. While exposing the
gemstone to incandescent (indoor) lighting

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makes it magically appear to transform to
varying shades of red. Many jewelers have
described Alexandrite as a ruby by night and an
emerald by day, due to the stones dramatic colour
changing effects. 

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The stone can also appear to have varying shades
of green, orange and purplish-red tones, when
viewed from the sides. These striking colours are
the result of pleochoric effects.

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But, the pleochoric colour changing effects are
not what causes the remarkable colour changes.
These changes occur from the unique
light-absorbing properties found within the
gemstone.

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Where Does Alexandrite Come From? Alexandrite
was originally discovered in the Ural Mountains
in Russia in the 1830s. It was originally
believed this was the only site where the
gemstone was found, so it made it very rare and
interesting.

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Later discovers of Alexandrite were made in
Brazil, Sri Lanka, Tanzania, Madagascar, and
India. However, it is worth mentioning, even with
Alexandrite being found in other areas around the
world, the deposits of the gemstone are still
limited and rare finds.

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In fact, stones of 5 carats or more have mostly
be found in Russia, with some rare and large
stones having also been found in Brazil. In most
cases, finding large stones is a very rare
occurrence. Most Alexandrite stones are typically
3 carats or less. With there being a limited
number of sites and small deposits of the
gemstone, it makes Alexandrite a rather unique
gemstone.

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Why Alexandrite Is Considered a Rare
Gemstone. Alexandrite is in the Chrysoberyl
family of gemstones. The reason it is rare is due
to the unusual chemical composition of the
gemstone, which contributes to its colour
changing abilities.

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Alexandrite is formed when a specific combination
of elements combine. Both beryllium and aluminum
must be present, as these are responsible for
absorbing light and giving the green and red
colour changing properties to the stone.

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In addition, other elements, in small amounts
must also be present and include chromium,
titanium, and iron. For rarer Alexandrite
formations, sometimes vanadium is also found
within the stone. What makes Alexandrite even
more special is the fact chromium is a very rare
element. Without chromium, there would be no
Alexandrite.

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If you consider the rarity of chromium, along
with the requirement that beryllium and aluminum
also be present, so they can combine, and all be
found within the ideal conditions to transform
into a gemstone, it is easy to see why it is so
valuable and rare.

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Custom Engagement Rings with Alexandrite If
you are looking to create an original and unique
engagement ring for your beloved, choosing rare
and unique gemstones, like Alexandrite, , almost
guarantees it will be one-of-a-kind.

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To learn more about Alexandrite or other rare and
interesting gemstones you can use to custom
design a ring or other jewelry pieces, please
feel free to visit our Toronto engagement ring
and jewelry store, Serli Siroan, or call us at
416-944-3863 today!  Source-
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