natural, colorless Topaz
coated with a very thin layer
of titanium applied to the underside, or pavillion,
of a gem through a process called physical vapor deposition.
This changes the way the gem absorbs and reflects light
and creates a rainbow effect within the gem. This "mystic"
treatment has also been used on Quartz gems.
Mystic Topaz, also known as Mystic Fire or Caribbean, Alaska or
Bermuda Topaz, has only existed since 1998, when a method for coating colorless
Topaz was patented by Azotic Coating Technologies, Inc., in Minnesota.
Mystic Topaz first gained attention at the Tucson gem show in 2003,
creating such demand that the natural, colorless Topaz from which it is
made had a temporary period of short supply until demand tapered off.
coating of Mystic Topaz should be treated as delicately as you
handle pearls. Scratching the coating or the stone itself will affect
how it refracts light. Chemical jewelry cleaners safe for pearls and opals are the only ones
that should be used on Mystic Topaz. It may also be cleaned with Windex or
other ammonia-based cleaners, or a mild solution of dishwashing soap and
Natural Topaz used to create Mystic Topaz is found in many regions all
over the world.