Duo gem tester (Presidium PDT-II) Digital scales - regular lines - resolution 0.1g 11X or 15X magnification

11X or 15X magnification

50 return postage payable

for repairing larger antiques

but there isn't much room to fit stones mounted in jewellery

For the professional jeweller: from 3 points is safe

Duo gem tester (Presidium PDT-II) Digital scales - regular lines - resolution 0.1g 11X or 15X magnificationSummary Bench model. A dual tester with both thermal meter and reflectivity meter. Place the probe on the stone to operate analogue meter (the thermal meter, see detail in the extra pictures). Place the stone over the sensor (even if it's in jewellery) to operate the digital meter (the reflectivity meter). You don't have to use both systems, you can choose one or the other. Includes heavy duty nylon carrying case and a PPR3 battery. Also power supply