GEM
ORO ULTRATESTER 3+
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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
is the electrical conductivity test;
since most moissanite conducts
electricity, while diamonds, as well
as other known diamond simulants
do not. It should be noted that while
the vast majority of moissanite may
be electrically conductive, in some
moissanite gemstones there might
only be electrical conductivity in
a small varying degree. But have
no fear. With the new PATENTED
UV-F1 TECHNOLOGY™ built into
the UltraTester 3+, you can identify
the widest range of electrically
conductive moissanite material
available, including the new
super-low electrically conductive
Forever One moissanite.
Other than some rare and natural
colored diamonds, as well as some
lab grown synthetic diamonds,
natural white diamonds do not
conduct electricity. If a stone does
not conduct heat or electricity,
it will be determined to be more
than likely a common CZ or other
diamond simulant.
Because hand-
oil is electrically conductive and
the stone being tested may not be
clean, any test result that indicates
moissanite, especially on smaller
size stones that haven’t been
cleaned, should be suspect, cleaned,
and retested.
Due to the electrical
conductivity properties of some of
the chemicals commonly used in the
production of lab-grown synthetic
diamonds, when the UltraTester 3+’s
probe tip touches these stones the
metal alert feature or moissanite
indication may be set off.
The GemOro Superior Instruments
UltraTester 3+ utilizes both the
thermal conductivity and electrical
conductivity testing methods in one
seemingly simultaneous test, and it
will quickly help in identifying and
separating the stone in question.
The UltraTester 3+ is an advanced,
technologically based tool and it
should be used as a helpful device
only. The UltraTester 3+ is not meant
to replace the trained gemologist.
NATURAL COLORED DIAMONDS
& TREATED COLORED DIAMONDS
Because some fancy natural
colored diamonds and some fancy
treated colored diamonds are
electrically conductive, the GemOro
UltraTester 3+ should ideally be
used on colorless stones only. This
limitation applies to all testers
that utilize thermal and electrical
conductivity methods for testing
the authenticity of the stone.
IMPORTANT DISCLAIMER:
The
UltraTester 3+ is a helpful screening
tool that by design is to be used as a
quick method for helping to identify
diamond, moissanite, and white
sapphire. The UltraTester 3+ should
not be used as the final method
for determining the authenticity
