Real Instruments Diamond Tester Pen – Portable Jewelry Gemstone Detector with LED Indicator & Beep Alert | Handheld Thermal Conductivity Diamond Testing Tool for Loose & Mounted Stones, DS2

The Diamond Jewelry Tester is a compact and reliable tool designed to quickly and accurately test the authenticity of diamonds and distinguish them from other gemstones. Ideal for jewelers, gemstone dealers, collectors, and personal users, this tester uses advanced thermal conductivity technology to detect real diamonds.

With an easy-to-read LED indicator display, the tester provides instant results. Its lightweight, handheld design makes it convenient for on-the-go testing, while the simple one-button operation ensures ease of use even for beginners. Equipped with an audio indicator, the device beeps when a genuine diamond is detected, giving both visual and audible confirmation.

This tester is suitable for testing mounted or loose diamonds, making it an essential tool for jewelry evaluation, pawnshops, auctions, and home use.

Key Features:

• • 💎 Instant Diamond Verification – Accurately tests diamonds using advanced thermal conductivity technology, helping you distinguish real diamonds from imitations.

  • 🔔 Dual Alerts for Accuracy – Easy-to-read LED indicator scale plus audible beep sound when a real diamond is detected.

  • 📏 Clear LED Display – Visual scale from 1–9 with a dedicated “DIA” zone for quick and reliable results.

  • 👜 Portable & Lightweight – Compact handheld design, fits easily in your pocket or carrying case, perfect for jewelers, appraisers, and on-the-go testing.

  • 🔋 Battery Powered Convenience – Operates with a standard 9V battery (not included), making it cordless and easy to use anywhere.

  • 🛠️ Simple to Use – One-touch operation with adjustable volume, ideal for both professionals and beginners.

  • 💍 Test Loose & Mounted Stones – Works on diamonds set in rings, necklaces, bracelets, or unmounted stones.

  • 📦 Complete Set – Comes with tester device, probe tip, protective carrying case, and user manual for hassle-free use.

• Specifications:

  • Product Type: Diamond Tester

  • Technology: Thermal Conductivity Detection

  • Display: LED Light Bar (scale 1–9 + DIA zone)

  • Alert: Visual + Beep Sound

  • Power Supply: 9V Battery (not included)

  • Dimensions: 16 x 4 x 2.2 cm (6.3 x 1.6 x 0.9 in)

  • Weight: Approx. 120 g (without battery)

  • Material: ABS Plastic Housing

  • Operating Temperature: 10°C – 35°C (50°F – 95°F)