London Blue Topaz

 

There are 3 hues of blue that white topaz is treated to by heating & neutron/electron treatment:

 

London Blue Topaz can be achieved by bombarding the stones with heat, neutron and electron treatment. The stones become radioactive after Neutron treatment and can only be released into the market for sale after they have passed the certified radiation level. 

 

GSC carries all types of London BT Stone, including Rough, Preform & hand-cut & machine-cut stone (calibrated and free size).

 

The color of London Blue topaz is permanent.

Topaz > London Blue Topaz

London BT Sq Cut

London BT Sq Cut

london blue topaz square cut

LONDON BT CUT PEARS

LONDON BT CUT PEARS

london blue topaz pears cut

LONDON BT OV CUT

LONDON BT OV CUT

london blue topaz oval cut

LONDON BT PEARS CUT SMALL

LONDON BT PEARS CUT SMALL

london blue topaz pears cut

London Blue Topaz Rough

London Blue Topaz Rough

London Blue Topaz Cut

London Blue Topaz Cut

London Blue Topaz Cut Free Size

London Blue Topaz Cut Free Size

​© 2020 by Gem Stone Company.

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