{"product_id":"diamond-jade-thermal-tester-pen-authenticity-detector","title":"Diamond \u0026 Jade Thermal Tester Pen – Authenticity Detector","description":"\n\u003ch2\u003eDiamond \u0026amp; Jade Thermal Tester Pen – Portable Authenticity Detector\u003c\/h2\u003e\n\u003cp\u003eWondering if that gemstone is the real deal? The \u003cstrong\u003eDiamond \u0026amp; Jade Thermal Tester Pen\u003c\/strong\u003e uses advanced thermal conductivity technology to instantly verify whether a stone is a genuine diamond, jadeite, or jade — or a simulant like cubic zirconia (CZ). Compact, easy to use, and ready right out of the box, it's an essential tool for jewelers, collectors, and curious buyers alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstant Thermal Detection:\u003c\/strong\u003e Measures thermal conductivity to distinguish real diamonds and jade from fakes in seconds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED \u0026amp; Audible Indicators:\u003c\/strong\u003e Green LED lights up for confirmed genuine diamonds; audible beeps deliver clear, accurate readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLCD Display:\u003c\/strong\u003e Easy-to-read screen shows results at a glance — no guesswork required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMetal Alert:\u003c\/strong\u003e Built-in metal detection triggers a continuous buzzing alert if the probe accidentally contacts metal instead of a gemstone, preventing false readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge\/Small Stone Switch:\u003c\/strong\u003e Adjustable sensitivity for testing diamonds and gems of varying sizes (+\/- 8 points), making it versatile for loose stones and set jewelry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCZ \u0026amp; Simulant Detection:\u003c\/strong\u003e If a stone is a fake crystal or simulant such as cubic zirconia (CZ), the tester gives no positive reaction — so you always know what you have.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick Warm-Up:\u003c\/strong\u003e Simply power on, wait a few seconds for the instrument to pre-heat and calibrate, then test.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Metal Construction:\u003c\/strong\u003e Built from sturdy metal at 135 mm — slim enough to slip into a bag or toolkit for on-the-go verification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly:\u003c\/strong\u003e Straightforward operation means anyone can use it confidently from the very first test.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis thermal tester pen is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eJewelry professionals and gemologists verifying stock authenticity\u003c\/li\u003e\n  \u003cli\u003eCollectors and enthusiasts evaluating diamonds, jade, and jadeite\u003c\/li\u003e\n  \u003cli\u003eBuyers at estate sales, antique markets, or gem shows\u003c\/li\u003e\n  \u003cli\u003eAnyone who wants confidence before purchasing or gifting fine jewelry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 135 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e LCD + LED indicator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlerts:\u003c\/strong\u003e Audible beep + visual LED\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Stones:\u003c\/strong\u003e Diamonds, jadeite, jade, cubic zirconia (CZ) detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Qme\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor further reading on gemstone identification and quality standards, visit the \u003ca href=\"https:\/\/www.nist.gov\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Institute of Standards and Technology (NIST)\u003c\/a\u003e, which provides resources on measurement science and material testing.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: How does the Diamond \u0026amp; Jade Thermal Tester Pen verify gemstone authenticity?\u003c\/h4\u003e\n\u003cp\u003eA: The tester works by measuring the thermal conductivity of a stone. Real diamonds and genuine jade conduct heat at a distinctly different rate than simulants like cubic zirconia (CZ) or glass. When a genuine diamond is detected, the green LED lights up and an audible beep sounds. If the stone is a simulant or fake crystal, there is no reaction, giving you a clear, reliable result every time.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this tester distinguish jade and jadeite from imitations?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The thermal conductivity sensor is calibrated to identify genuine jadeite and jade as well as real diamonds. Imitation stones and glass simulants will not trigger the positive indicator, allowing you to quickly assess whether a piece is authentic or a look-alike.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the metal alert feature do?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in metal alert triggers a continuous buzzing sound if the probe tip accidentally touches metal (such as a ring setting or clasp) instead of the gemstone itself. This prevents false positive readings and ensures you are always testing the stone, not its setting.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this tester suitable for beginners?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The Diamond \u0026amp; Jade Thermal Tester Pen is designed to be beginner-friendly. Simply power on the device, allow a few seconds for it to pre-heat, then gently press the probe tip against the gemstone surface. The LCD display and LED\/audible indicators make interpreting results quick and intuitive — no prior gemology experience needed.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How does the Diamond \u0026 Jade Thermal Tester Pen verify gemstone authenticity?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The tester works by measuring the thermal conductivity of a stone. Real diamonds and genuine jade conduct heat at a distinctly different rate than simulants like cubic zirconia (CZ) or glass. When a genuine diamond is detected, the green LED lights up and an audible beep sounds. 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