GEMORO TESTEROSSA 18 19
and make the best contact with
the stone being tested. While
holding the tester, its ergonomic
shape allows it to comfortably rest
in and on the top of your hand.
If you hold the tester without
touching the finger pads, the metal
alert feature will not function.
9. 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
L
that
may also be used to identify the
fluorescence characteristic found in
approximately 30% of all diamonds.
10. Testing Mounted Stones: With one
hand, ALWAYS hold the ring or
setting that contains the stone
you wish to test and in your other
hand hold the TESTEROSSA.
NEVER TEST A RING WHILE
PLACED IN A RING BOX OR IT
MAY NOT TEST CORRECTLY.
Position the stone’s table
M
in
front of the testers probe tip.
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. Be aware that a stone
that has been overheated by
prolonged exposure to the probe,
or from body heat due to wearing
or the environment, may not test
accurately. Always allow the stone
and setting a few seconds to cool
off to room temperature before
testing. Blowing on the stone will
speed up this process.
HOW TO PROPERLY HOLD THE TESTER
TESTING A MOUNTED STONE
FLUORESCING STONE
K
L
M
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