{"product_id":"diamond-gemstone-tester-pen-led-indicator-portable","title":"Diamond \u0026 Gemstone Tester Pen with LED Indicator | Qme","description":"\u003ch2\u003eIdentify Real Diamonds \u0026amp; Gemstones Instantly\u003c\/h2\u003e\n\u003cp\u003eTake the guesswork out of gem verification with this \u003cstrong\u003ePortable Diamond \u0026amp; Gemstone Tester Pen\u003c\/strong\u003e. Whether you're a jeweler, collector, hobbyist, or just want to verify a stone's authenticity, this compact tool delivers fast, reliable results right in the palm of your hand — no lab required.\u003c\/p\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eSimply press the precision metal tip against the surface of any gemstone. The built-in sensor reads the stone's thermal conductivity and delivers an instant result: a \u003cstrong\u003ered LED light illuminates and an audio tone sounds\u003c\/strong\u003e when a real diamond is detected. No result? The stone is likely a simulant or non-diamond gem. It's that straightforward.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Indication System:\u003c\/strong\u003e Both LED light and audio beep confirm diamond authenticity at a glance — no squinting at a screen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable Pen Design:\u003c\/strong\u003e Slim, lightweight ABS body slips easily into a pocket, bag, or jewelry kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy One-Hand Operation:\u003c\/strong\u003e Ergonomic pen-style grip makes testing simple and intuitive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built from sturdy ABS plastic for everyday use in professional or hobby settings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassic Black Finish:\u003c\/strong\u003e Sleek, professional look suitable for jewelers, estate sales, gemstone markets, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis gemstone tester is perfect for \u003cstrong\u003ejewelers, gemologists, collectors, antique dealers, estate sale shoppers, and crafting enthusiasts\u003c\/strong\u003e who want a quick, portable way to verify diamond authenticity on the spot. It also makes a thoughtful and practical gift for anyone with a passion for jewelry or gemstones.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ABS Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndication:\u003c\/strong\u003e Red LED Light + Audio Alert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Pen \/ Handheld\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Qme\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on gemstone standards and identification, visit the \u003ca href=\"https:\/\/www.nist.gov\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Institute of Standards and Technology (NIST)\u003c\/a\u003e, a trusted resource for measurement and material science.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: How does the Diamond \u0026amp; Gemstone Tester Pen work?\u003c\/h4\u003e\n\u003cp\u003eA: The tester uses thermal conductivity technology to distinguish real diamonds from simulants. Touch the precision tip to the stone's surface — if it's a genuine diamond, the red LED activates and an audio tone sounds, giving you a clear, instant result.\u003c\/p\u003e\n\u003ch4\u003eQ: What materials is the gemstone tester pen made from?\u003c\/h4\u003e\n\u003cp\u003eA: The tester pen is constructed from durable ABS plastic, giving it a lightweight yet sturdy build that's ideal for everyday use in professional jewelry settings or gem-collecting hobbies.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this tester identify gemstones other than diamonds?\u003c\/h4\u003e\n\u003cp\u003eA: This tool is specifically designed to detect real diamonds based on their unique thermal conductivity. It can help distinguish diamonds from common simulants such as cubic zirconia or glass, but it is not intended as a full multi-gem identifier.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this a good gift for jewelry enthusiasts?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! The Qme Diamond Tester Pen makes a practical and impressive gift for jewelers, collectors, antique shoppers, and anyone who appreciates gemstones. Its compact pen-style design and easy operation make it accessible for beginners and pros alike.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How does the Diamond \u0026 Gemstone Tester Pen work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The tester uses thermal conductivity technology to distinguish real diamonds from simulants. 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Its compact pen-style design and easy operation make it accessible for beginners and pros alike.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Crafts, Sewing \u0026 Office\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/crafts-sewing-office\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Diamond \u0026 Gemstone Tester Pen with LED Indicator | Qme\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/diamond-gemstone-tester-pen-led-indicator-portable\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"A","offer_id":49724306784470,"sku":"14:29#A","price":23.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/S92f09f9d42d34cf294ebcfccb775c5f5S.webp?v=1785303847","url":"https:\/\/qmeboost.com\/products\/diamond-gemstone-tester-pen-led-indicator-portable","provider":"Qme","version":"1.0","type":"link"}