{"product_id":"mollo-diamond-tester-pen-handheld-thermal-conductivity-meter-kit-with-lcd-led-audible-alerts","title":"Mollo Diamond Tester Pen — Handheld Thermal Conductivity Meter Kit with LCD, LED \u0026 Audible Alerts","description":"\u003cp\u003e\u003cstrong\u003eThe Mollo Diamond Tester Pen is a handheld, high-accuracy thermal conductivity meter that quickly distinguishes real diamonds and many other gemstones from simulants.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eCompact and battery-powered, this professional diamond selector kit is built for jewellers, gem hobbyists and buyers who need fast, on-the-spot verification. It combines an LCD and LED readout with audible alerts, a metal-contact alarm, and a two-position size switch so you can test a wide range of stone sizes while avoiding false signals from metal settings.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Mollo tester identify a genuine diamond?\u003c\/h3\u003e\n\u003cp\u003eThe Mollo pen measures thermal conductivity and converts the result into a visible scale and sound cue. A bright green indicator plus audible tone confirms a genuine diamond when the reading reaches the higher end of the scale.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThermal conductivity sensor for diamond detection.\u003c\/li\u003e\n  \u003cli\u003eGreen LED and sound signal when reading meets diamond criteria.\u003c\/li\u003e\n  \u003cli\u003eLCD scale shows numerical level to interpret results.\u003c\/li\u003e\n  \u003cli\u003eLarge\/small switch adapts probe sensitivity for different stone sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat gemstones and fakes can this kit test reliably?\u003c\/h3\u003e\n\u003cp\u003eBeyond diamonds, the Mollo tester can help distinguish many common gemstones and simulants by their thermal properties. The unit produces distinct ranges for diamond, crystal, jade, glass and other stones, but extremely similar simulants may require supplemental testing methods.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetects real diamond, sapphire, ruby, agate, jadeite and crystal families.\u003c\/li\u003e\n  \u003cli\u003eCommon simulants like cubic zirconia usually register as non-diamond.\u003c\/li\u003e\n  \u003cli\u003eIntermediate readings indicate materials such as glass or jade.\u003c\/li\u003e\n  \u003cli\u003eNot designed to test metals or when gloves obstruct contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I get accurate readings — simple step-by-step use?\u003c\/h3\u003e\n\u003cp\u003eAccuracy depends on correct technique and stable temperature. Warm the probe briefly, place it at a 90° angle to the stone surface, and maintain a steady contact pressure while monitoring the LCD and LEDs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePower on and wait for the ready lamp; allow probe to warm up.\u003c\/li\u003e\n  \u003cli\u003eEnsure only one scale light is lit before testing for baseline.\u003c\/li\u003e\n  \u003cli\u003eTouch the probe perpendicularly and hold firmly for a few seconds.\u003c\/li\u003e\n  \u003cli\u003eAvoid testing metal and don’t wear gloves; touch the rear contact when testing diamonds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and how is the Mollo pen maintained?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives ready for use with a 9V battery installed and includes a leather pouch, testing platform and manual. Keep the probe clean, store at moderate temperatures, and replace the battery when readings grow weak.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage: Mollo Diamond Tester, leather pouch, testing platform, user manual.\u003c\/li\u003e\n  \u003cli\u003ePowered by one 9V battery (included) — replace when performance drops.\u003c\/li\u003e\n  \u003cli\u003eAvoid cold conditions; battery performance may decrease below 10°C.\u003c\/li\u003e\n  \u003cli\u003eStore probe safely in pouch to protect the sensor tip between uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Mollo Diamond Tester Pen is aimed at professional jewellers, pawnshop operators, gemstone enthusiasts and shoppers who want a portable, easy-to-read verifier. It’s suitable for novices who follow the user steps and for experienced users who need a fast thermal-conductivity check as part of a larger gem-evaluation workflow. For ambiguous or high-value stones, combine this tester with other gemological tests for a complete assessment.\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: Does the Mollo tester come with a battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Mollo kit includes a 9V battery installed so you can test right away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I test rings without removing them from their settings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, but avoid touching metal; use steady 90° probe contact and touch the rear contact pad when testing diamonds.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mollo","offers":[{"title":"Default Title","offer_id":55253630124369,"sku":"B0B6BTWQN1","price":31.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/mollo-diamond-tester-front-view.jpg?v=1791661769","url":"https:\/\/craftiche.co.uk\/products\/mollo-diamond-tester-pen-handheld-thermal-conductivity-meter-kit-with-lcd-led-audible-alerts","provider":"Craftiche","version":"1.0","type":"link"}