Handheld presidium gem tester +3x AAA batt (model PGI)

Summary Handheld model. The first gem tester that is truly pocket-size, with the finest probe tip, will test stones down to 2pts in size. Works on any stone, loose or mounted, even uncut.  Instruction manual (pdf) Video (youtube) Video Details - replaceable probe (i.e. if you break it) - latest technology, this is the only tester of this sophistication that is pen-size, operated with one hand, slips into a pouch, truly pocket-size - super-fast warm-up time between tests, just 3 seconds - auto-power-off if not used for 10mns, battery indicator - takes 3 standard batteries (supplied) or can be powered from a USB cable (not supplied).  - will give an indication on 31 different gemstones: Glass Beryl group: Aquamarine, Emerald, Goshenite, Helidor, Morganite. Tanzanite. Jade (Nephrite) Jade (Jadite) Peridot Tourmaline group: Paraiba, Rubellite, Tourmaline Garnet (Grossular-Andralite group): Demantoid garnet, Hessonite, Tsavorite Quartz group: Chrysophrase, Amethyst, Adventurine, Citrine, Quartz Spinel Chrysoberyl Topaz Corundum group: Ruby, Sapphire Diamond NOTE: there is overlap between readings (see our chart), this means the display will usually give a list of 2 or 3 or 4 stones; you can narrow this down by entering its colour - but you will end up with more than one possible stone, and you then have to decide which one it is.   Accesories Included: Strong nylon carrying pouch USB cable (connects to any computer/mobile device / USB-mains adaptor).  Disclaimer All testers  must be used in conjunction with the user's skill, knowledge and experience. Under no circumstances shall QUICKTEST be liable for direct or indirect loss sustained in connection with any item. Nothing is 100% accurate, you must understand the limitations of any tester you buy. We also suggest you regularly test known samples to check for any obvious faults. Full support given for items you buy from QUICKTEST. Alternatives For a summary of all diamond and gem testers see the Comparison Chart, or see a more detailed explanation of what the various types of tester can (and can't) detect at Electronic Gem Testers.  If you specifically need to test diamonds, consider a diamond tester, they are more finely-tuned for testing diamonds, see our Guide to Buying Diamond Testers.