Gemstone treatment
Irradiation and Annealing, Topaz
Color can range from pale sky blue to intense London blue. Microscopic detection is usually not possible.
01
What to look for
Color can range from pale sky blue to intense London blue. Microscopic detection is usually not possible.
02
What it means
Most blue topaz on the market is irradiated and annealed. The treatment is stable after proper safety decay and disclosure.
03
Expert move
Assume commercial blue topaz is treated unless documented otherwise.