Quick, portable diamond verification that protects your jewelry and reduces costly mistakes. Key benefits Fast, clear results: A bright LED scale plus an audible beep give immediate confirmation when a stone is a real diamond — nine or more lights and a beep indicate authenticity. Protects your pieces: Nondestructive testing preserves the quality and setting of loose or mounted stones while you verify them. Fieldready and easy to use: Lightweight, compact, batterypowered, and handheld — it fits in a pocket and is practical for counters, onsite inspections, and travel. Features and performance Smart indicator lighting: Bright multisegment LED scale shows the stone's response; visual and audible signals make interpretation simple and reliable during routine checks. Advanced thermal conductivity: Uses professionalgrade thermal conductivity measurement to identify diamonds by their characteristic heat transfer properties. Userfriendly form factor: Designed for singlehanded operation with rapid warmup and testing, ideal for staff and owners who need repeatable, onthego checks. Typical applications Jewelry stores and appraisal offices: Quickly screen incoming inventory and consignments before further testing or pricing. Collectors and estate buyers: Verify pieces at auctions, estate sales, or private transactions to avoid uncertain purchases. Field inspections and pawnshops: Portable design makes it easy to perform fast authenticity checks during site visits or lot evaluations. What it delivers Clear pass/fail indication with both lights and sound Safe, noninvasive testing that leaves stones and settings intact Portable, batterypowered convenience for use anywhere Use this handheld diamond tester when you need a straightforward, nondestructive way to confirm diamond authenticity using proven thermal conductivity measurement.