{"product_id":"presidium-pgi-gem-indicator-colored-stone-tester-31-gems","title":"Presidium PGI Gem Indicator","description":"\u003cp\u003eThe \u003cstrong\u003ePresidium Gem Indicator (PGI)\u003c\/strong\u003e is the only handheld tester specifically designed for colored gemstones. Using advanced thermal conductivity technology, it can identify up to 31 different gem types and includes a color input function with 12 common gemstone colors for even greater accuracy. A clear digital LED screen ensures easy-to-read results, while the patented changeable probe tip delivers reliable, long-term performance.\u003c\/p\u003e\u003cp\u003eThe PGI is a convenient, handheld upgrade from the popular Presidium PGT\/CSE Gem Tester (SKU: 156.750), combining proven accuracy with enhanced portability.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDifferentiates diamonds from other colored gemstones\u003c\/li\u003e\n\u003cli\u003eIdentifies up to 31 gemstone types\u003c\/li\u003e\n\u003cli\u003eColor input function with 12 color choices for improved precision\u003c\/li\u003e\n\u003cli\u003eThinner 0.45mm retractable probe tests stones as small as 0.2 ct\u003c\/li\u003e\n\u003cli\u003eChangeable probe tip for extended service life\u003c\/li\u003e\n\u003cli\u003eBuilt-in metal alert buzzer\u003c\/li\u003e\n\u003cli\u003eLow battery indicator\u003c\/li\u003e\n\u003cli\u003eInternal gemstone database with color references\u003c\/li\u003e\n\u003cli\u003eUSB connection for firmware and software updates\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTesting Range\u003c\/th\u003e\n\u003ctd\u003eUp to 31 colored gemstones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProbe\u003c\/th\u003e\n\u003ctd\u003e0.45mm retractable thermoelectric probe, changeable tip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum Stone Size\u003c\/th\u003e\n\u003ctd\u003e0.2 ct and above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eDigital LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e3 x AAA batteries (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnectivity\u003c\/th\u003e\n\u003ctd\u003eUSB connection for software updates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Ambient Temp\u003c\/th\u003e\n\u003ctd\u003e73–80°F (23–27°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":43582261035222,"sku":"156.750PGI","price":368.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/presidium-pgi-gem-indicator-otto-frei-1.jpg?v=1719957145","url":"https:\/\/www.ottofrei.com\/products\/presidium-pgi-gem-indicator-colored-stone-tester-31-gems","provider":"Otto Frei","version":"1.0","type":"link"}