PRESIDIUM Diamond Mate PDMT Series, User Handbook Manual

Page: 13 / 108

13
2. PERFORMING A TEST with your Presidium
Diamond Mate
Place the tip of the probe pen against the gemstone.
Apply minimal pressure to fully depress the tip into the
probe pen for correct reading. This is to provide steady
and constant contact between the probe tip and the
gemstone.
For mounted jewelry or gemstones:
Hold the jewelry or gemstone with one hand and the
tester with the other hand (Fig. 2.1). For proper
operation of the tester, the thumb and index finger must
always be placed on the metal-plated serrated part
located on both sides of the tester at all times. Care
should be taken when testing mounted jewelry. User
must ensure that the stones are securely mounted before
conducting a test as gap between stone and setting might
lead to inaccurate reading.
For testing loose gemstones:
Place the gemstone on the metal stone rest and hold the
metal stone rest with one hand while holding the tester
with the other hand (Fig. 2.2).
Fig. 2.1
Fig. 2.2
Note : Metal stone rest is not provided by Presidium.
Tips for using your Presidium Diamond Mate
The probe tip must be placed at a right angle or
perpendicular to the facet of the gemstone for an
accurate reading.