{"product_id":"high-accuracy-diamond-tester-pen-selector-kit","title":"High Accuracy Diamond Tester Pen \u0026 Selector Kit | Pro Use","description":"\n\u003ch2\u003eInstantly Identify Real Diamonds with Professional Accuracy\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHigh Accuracy Diamond Tester Pen \u0026amp; Selector Kit\u003c\/strong\u003e is the go-to tool for jewelers, gemologists, collectors, and anyone who wants to quickly verify the authenticity of diamonds and gemstones. Whether you're buying loose stones, checking estate jewelry, or working at a jeweler's bench, this compact and easy-to-use tester delivers fast, reliable results every time.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstant LED \u0026amp; Audio Feedback:\u003c\/strong\u003e A red LED light illuminates and an audio alert sounds the moment a real diamond is detected — no guesswork needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Precision Probe Tip:\u003c\/strong\u003e Engineered for accurate and repeatable readings across diamonds of various shapes and sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple One-Button Operation:\u003c\/strong\u003e Minimal learning curve — just calibrate, touch the probe to the stone, and read the result.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Calibration:\u003c\/strong\u003e Easily adjustable for loose stones and mounted gems alike.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable Design:\u003c\/strong\u003e Lightweight ABS body (14 × 4 × 2 cm) fits in your pocket or tool roll with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Comes with a dedicated testing platform for loose stones, a protective carrying case, and a detailed user manual — everything you need right out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e ABS Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 1 × 9V DC Battery (not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eItem Size:\u003c\/strong\u003e 14 × 4 × 2 cm (5.5 × 1.6 × 0.8 in)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Diamond Selector Tester Pen\u003c\/li\u003e\n  \u003cli\u003e1 × Loose Stone Testing Platform\u003c\/li\u003e\n  \u003cli\u003e1 × Protective Carrying Case\u003c\/li\u003e\n  \u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare \u0026amp; Maintenance Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways replace the probe sheath when not in use — the tip is precision-sensitive.\u003c\/li\u003e\n  \u003cli\u003eReplace the 9V battery promptly when the indicator light dims.\u003c\/li\u003e\n  \u003cli\u003eRemove the battery if storing the unit for an extended period.\u003c\/li\u003e\n  \u003cli\u003eFor best accuracy, recalibrate the device approximately once per year.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor more information on gem and jewelry standards, visit the FTC's Jewelry Buying Guide for consumer tips on verifying precious stones.\u003c\/p\u003e\n\n\u003ch3\u003eExplore More From Our Store\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-art-print\"\u003eMotivational Canvas Wall Art Print\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/are-you-pooping-funny-cat-bathroom-canvas-wall-art-print\"\u003eFunny Cat Bathroom Canvas Wall Art\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Jewellery_design\" target=\"_blank\" rel=\"noopener\"\u003eJewellery design\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the diamond tester pen actually detect?\u003c\/h4\u003e\n\u003cp\u003eA: The diamond tester pen measures thermal conductivity to distinguish real diamonds from cubic zirconia, glass, and most simulants. When the probe contacts a genuine diamond, the LED indicator lights up red and an audio alert sounds, confirming the stone's authenticity.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the diamond tester kit work on mounted stones as well as loose gems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The kit is designed for both loose stones (using the included testing platform) and stones that are already mounted in jewelry settings, making it versatile for bench jewelers and collectors alike.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is a battery included with the diamond selector kit?\u003c\/h4\u003e\n\u003cp\u003eA: No, the kit requires one standard 9V DC battery, which is not included. Most hardware and grocery stores carry 9V batteries, so you can be up and running very quickly after purchase.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How accurate is this diamond tester pen?\u003c\/h4\u003e\n\u003cp\u003eA: This professional-grade diamond selector offers high accuracy for distinguishing diamonds from common simulants. For best results, calibrate before each session and follow the maintenance guidelines in the included user manual.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the diamond tester pen actually detect?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The diamond tester pen measures thermal conductivity to distinguish real diamonds from cubic zirconia, glass, and most simulants. 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