{"product_id":"presidium-pgi-handheld-gem-indicator-diamond-colored-gem-tester-usb-rechargeable-led-readout","title":"Presidium PGI Handheld Gem Indicator — Diamond \u0026 Coloured Gem Tester, USB Rechargeable, LED Readout","description":"\u003cp\u003e\u003cstrong\u003eThe Presidium PGI Handheld Gem Indicator is a portable tester that distinguishes diamonds from many coloured gemstones and delivers clear results in seconds.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe PGI combines a retractable thermoelectric probe, colour input function, and a digital LED readout to give jewellers, appraisers, and hobbyists rapid, reliable identification across an extended list of 31 gemstones. Lightweight and ergonomic, the unit runs on USB power or internal battery and is built for bench and field use where quick decisions matter.\u003c\/p\u003e\n\n\u003ch3\u003eHow fast and accurate are the PGI test results?\u003c\/h3\u003e\n\u003cp\u003eResults appear on the LED screen in under six seconds for most stones, enabling swift sorting and preliminary identification without removing the setting in many cases. The retractable thin probe maintains consistent contact pressure, reducing user-induced variation and improving repeatability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTypical readout time: \u0026lt;6 seconds for most gems\u003c\/li\u003e\n  \u003cli\u003eProbe maintains steady pressure for consistent measurements\u003c\/li\u003e\n  \u003cli\u003eDigital LED display shows clear, immediate identification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich gemstones does the PGI differentiate and how does the colour input help?\u003c\/h3\u003e\n\u003cp\u003eThe PGI is calibrated to test 31 common gemstones, including diamonds and frequently encountered coloured stones. The colour input option narrows down ambiguous responses by factoring visible colour, which increases the precision of the suggested identification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSupports identification across 31 gemstone types\u003c\/li\u003e\n  \u003cli\u003eColour input reduces misidentification among visually similar stones\u003c\/li\u003e\n  \u003cli\u003eUseful for separating treated or similar-composition gems during screening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat design features make the PGI practical for daily use?\u003c\/h3\u003e\n\u003cp\u003eBuilt with an ergonomic chrome-brushed grip and a slim retractable probe tip, the PGI is comfortable to hold for extended sessions and able to reach small or tight settings. The USB port allows flexible power options, and the compact handheld form fits easily in a tool kit or bench drawer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eErgonomic grip reduces hand fatigue\u003c\/li\u003e\n  \u003cli\u003eRetractable thin probe for precise contact on small facets\u003c\/li\u003e\n  \u003cli\u003eUSB port for alternative power sources and easy recharging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I rely on the PGI for professional workflows?\u003c\/h3\u003e\n\u003cp\u003eWhile not a replacement for exhaustive laboratory analysis, the PGI is an industry-trusted field tester that speeds up routine screening and triage. Many professionals use it as an initial filtering tool before sending samples for advanced gemological testing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIdeal as a rapid screening device in professional settings\u003c\/li\u003e\n  \u003cli\u003eHelps prioritize stones for laboratory analysis\u003c\/li\u003e\n  \u003cli\u003eDurable design for daily bench and on-site use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Presidium PGI is aimed at jewellery retailers, gemologists, pawn and estate buyers, repair technicians, and serious hobbyists who need a quick, portable method to distinguish diamonds from common coloured gemstones. It’s best used as a fast, reliable first step in identification, complementing more detailed laboratory methods when certainty is required.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does a PGI test take?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most tests return a result in under six seconds using the retractable probe and LED readout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the PGI replace laboratory gem testing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — it’s a fast screening tool for routine identification, not a substitute for full lab analysis.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":55298310209873,"sku":"B06X979666","price":405.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/presidium-pgi-front-view.jpg?v=1791965698","url":"https:\/\/craftiche.co.uk\/products\/presidium-pgi-handheld-gem-indicator-diamond-colored-gem-tester-usb-rechargeable-led-readout","provider":"Craftiche","version":"1.0","type":"link"}