GEMORO TESTEROSSA 2 3
The GemOro TESTEROSSA
is the ultimate tester for
diamond fraud protection! The
TESTEROSSA features exclusive
UV-F1 TECHNOLOGY™ and is capable
of identifying the widest range of the
electrically conductive moissanite
material available, including the new
super-low electrically conductive
Forever One moissanite.
OPERATING PROCEDURE
& OWNERS MANUAL
Congratulations on your purchase
of the TESTEROSSA by GemOro
Superior Instruments, the most
trusted name in gemological
instrumentation for the jewelry
industry. You’ve made a smart
choice, because the TESTEROSSA
is considered to be the world’s
best, most accurate, and durable
option amongst diamond testing
instruments designed to assist you
in separating true diamonds from
moissanite, white sapphire, CZ, and
other known diamond simulants.
IMPORTANT: PLEASE BE CERTAIN
TO READ THE FOLLOWING
COMPLETELY BEFORE USING.
THERMAL CONDUCTIVITY &
ELECTRICAL CONDUCTIVITY
TESTING METHODS: The recognized
method for separating diamond from
all known diamond simulants (except
moissanite and synthetic diamond)
is the thermal conductivity test. The
thermal conductivity test works
consistently well since the thermal
(or heat) conductivity property of
a diamond is significantly greater
than all other gemstones (except
moissanite and synthetic diamond).
White sapphire is also thermally
conductive, yet not as conductive
as a diamond or moissanite.
The recognized, most practical way
for separating the vast majority of
moissanite gemstones from diamond
READ BEFORE USING
A high percentage of the new
generation, super-low electrically
conductive Forever One or “F1”
moissanite that was introduced in
late 2015 will incorrectly be identified
as diamond when tested on a
traditional combination electrical and
thermal conductivity tester. However,
your Testerossa uses the new
patented UV-F1 TECHNOLOGY™, and
it is exclusively calibrated to identify
this faint electrical conductivity
property. Please note that the new
Forever One moissanite can no
longer be easily visually identified, as
it is now D-E-F “colorless”, with few
inclusions.
Be aware that body oil is also
electrically conductive. Due to
the tester’s enhanced sensitivity
for electrical conductivity, dirty
diamonds may potentially test as
moissanite. To avoid false/positive
readings on dirty diamonds,
ALWAYS CLEAN THE STONE by
simply wiping the body oil off on
the provided STONE TESTING
CLOTH prior to performing a
test. Periodically, also clean any
accumulated body oil off of the
probe tip by gently rubbing it on
a piece of uncoated paper - SEE
MANUAL.
NEED HELP? Call GemOro
at 800.527.0719 for
immediate assistance.
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