Standard Electronic Gem Tester (Presidium PGT II) 15X to 30X magnification loupes for gemstones)

for gemstones)

Very high capacity slimline table balance

50 per battery*):

the boxes are a bit scuffed

there are limitations:

Standard Electronic Gem Tester (Presidium PGT II) 15X to 30X magnification loupes for gemstones)DETAILS 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