Calibrated Swiss Blue Topaz
Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.
Swiss Blue Topaz is the birthstone for the month of December. London Blue Topaz, the darker blue of the Topaz family is also used for Decembers birthstone. Blue Topaz is a natural Topaz that is irradiated to create a range of colors.
Swiss Blue Topaz - resourcecommitte.house.gov
Topaz Color Enhancements
Irradiated & Heat-Treated 'Blue Topaz' ...
* Swiss Blue Topaz - is a vivid medium, to medium dark blue topaz produced by combining neutron treatment with electron treatment, followed by heat treatment.
[Concave cut Swiss blue topaz, showing both the dramatic reflective pattern and the"scalloped" outline which can be seen in concaved gems, fantasy cut London blue topaz, ...
Between the two, Swiss blue topaz offers a shimmering shade of blue that is close the purest aquamarine. Transparent and pure, its heart glows with a hint of shimmer that brings to mind the incomparable sky of bright summer day.
Light blue topaz and is sometimes referred to by its brand names - Sky blue topaz (light blue), Swiss blue topaz (deep blue) and London blue topaz (deep ink blue).
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Cabochon ...
 See also: Gemstone, Stone, Color, Natural, Citrine
  
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