GEM
ORO PRO-M 3
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8. The LED Illuminator allows the
user to easily see the stone being
tested to confirm that only the
stone is being tested and that
the setting or prongs are not
accidentally being touched. This
LED is a special UV type
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that
may also be used to identify
the fluorescence characteristic
found in approximately 30%
of all diamonds. You may also
attach the optional GemOro Test
Stone Magnifier (Item# 0780)
to the PRO-M 3 by clipping it
onto the end of the tester’s
probe tip cone. This will allow
you to see a magnified view of
the stone being tested and help
ensure proper contact with the
stone while not accidentally
touching the setting or prongs.
9. Testing Mounted Stones:
With one
hand, hold the ring (or setting)
that contains the stone you wish
to test and in your other hand
hold the PRO-M 3
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. NEVER
TEST A RING WHILE PLACED
IN A RING BOX OR IT MAY NOT
TEST CORRECTLY.
Quickly, yet
firmly touch the testers probe tip
to the stone’s table, while being
certain not to allow the probe tip
to make contact with the metal
setting or prongs. While firmly
depressing the retractable probe
tip all of the way in until you hear
a click sound, touch the stone
just long enough to allow the
tester to indicate a reading (1 or 2
seconds) and then take the probe
tip away from the stone.
10. Testing Loose Stones: Place
the loose stone in the supplied
aluminum loose stone testing
plate positioned with the culet
facing down into the recessed
hole part of the testing plate.
Then hold the testing plate
steady with one hand, as this
will also allow the electrical
current to pass through your
body, permitting the tester to
FLUORESCING STONE
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TESTING A MOUNTED STONE
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HOW TO PROPERLY HOLD THE TESTER
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