Standard Electronic Gem Tester (Presidium PGT II) 15X to 30X magnification loupes Stability indicator: icon will appear

Stability indicator: icon will appear when balance is on a stable surface

allow time for us to send it back to the supplier for evaluation)

there are limitations:

This is not included in the price

for gemstones)

Standard Electronic Gem Tester (Presidium PGT II) 15X to 30X magnification loupes Stability indicator: icon will appearDETAILS Thermal meter, tests for 17 common groups of gemstones (about 40 varieties), enlarge the product picture to see the scale in detail. Works with any stone, loose or mounted in jewellery, even uncut stones. The only condition is that the stone (and tester) must be at room temperature. Instruction manual (pdf download) Video (youtube demonstration) Video (youtube calibration for serial numbers PTG111425 and after. Guide to buying electronic gem