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Learning Library

Blue Topaz Gemstone

November’s birthstone is now available in an array of blue tones.


Blue was once amongst the rarest colour to be seen in Topaz. Today, however, gem experts are able to turn the colourless variety into an array of glorious blues through treatments.

The techniques used are similar to that which naturally occurs in several areas of Brazil, where blue Topaz has been derived from contact from natural radiation of radioactive materials in the earth during their millions of years of formation.  The natural blues are far paler than the striking colours that are derived from man made enhancements.

There are three stunning Blue Topaz colours: Sky Blue, Swiss Blue and London Blue.

London Blue Topaz.

London Blue Topaz is generally the darkest shade of the Blue Topaz and is incredibly striking. Its tone is normally around 85%, with a hue reminiscent to the deeper areas of the Mediterranean Sea Swiss Blue.

 

Swiss Blue.

This name is green to Blue Topaz which are lighter than London Blue Topaz but darker than Sky Blue Topaz.

 

Sky Blue Topaz.

This is the lightest variety of Blue Topaz (20 to 30% tone) and when they  feature great clarity can often look similar to Aquamarine.

 

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London Blue Topaz

 

Swiss Blue Topaz

 

Sky Blue Topaz