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London Blue Topaz
There are 3 hues of blue that white topaz is treated to by heating & neutron/electron treatment:
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London Blue Topaz
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 from 1.50mm.
The color of London Blue topaz is permanent.
Topaz > London Blue Topaz
 Rough |
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 Rough |
 Rough |
 Preform |
 Preform |
 Cut Oval 4x6 |
 London BT Sq Cutlondon blue topaz square cut |
 LONDON BT CUT PEARSlondon blue topaz pears cut |
 LONDON BT OV CUTlondon blue topaz oval cut |
 LONDON BT PEARS CUT SMALLlondon blue topaz pears cut |
 London Blue Topaz Rough |
 London Blue Topaz Cut |
 London Blue Topaz Cut Free Size |
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