Diamond Tester Pen — Fast, reliable diamond and moissanite checks you can trust Key benefits Prevent costly mistakes: Quickly verify whether a stone is a real diamond, moissanite, a different gemstone, or a synthetic diamond before you or sell. Simple, no training required: Delivers clear results in seconds with a light touch to the jewelry surface — green light = real diamond, red light = possible synthetic or nondiamond. Portable, onthego testing: Compact and lightweight design fits in a pocket or bag so you can test items anywhere — stores, markets, or while traveling. What it does (function and performance) Advanced electronic sensing accurately distinguishes diamonds from moissanite, other gems, and synthetic diamonds. Multiple testing modes adapt to different jewelry types and stones for more reliable readings. Rapid results: a few seconds per test with immediate green/red light indication. Important attributes Function: Diamond authentication; moissanite and gemstone detection; multiple testing modes. Compatibility: Designed for testing loose stones and mounted jewelry surfaces. Size and portability: Compact, lightweight form factor for convenient carry and use. Performance: Fast, easy readings using advanced electronic technology for confident assessments. How it solves problems Cuts through uncertainty when buying secondhand, trading, or accepting jewelry as payment. Eliminates guesswork for nonexperts by providing an immediate, colorcoded result. Reduces time spent sending stones to a lab for basic identification checks. Practical use scenarios At a jewelry store: Test a loose stone or mounted ring before finalizing a to confirm authenticity. At a pawn or secondhand market: Inspect incoming inventory quickly to screen for synthetic stones or nondiamond gems. While traveling or on site: Carry in your bag to verify jewelry at trade shows, estate sales, or private viewings without specialized equipment. What makes this product stand out Combines ease of use with electronic accuracy and multiple testing modes in a compact penstyle tool. Clear, unambiguous light indicators let anyone perform reliable checks without prior experience. Package use recommendations Touch the tester lightly to the stone or jewelry surface and wait a few seconds for the indicator light. Interpret green as a positive diamond identification; interpret red as a potential synthetic diamond or alternate gemstone and consider further lab testing if definitive appraisal is required. Product name: Diamond Tester Pen