




Gem Authenticity Tester - Precision Tool for All Skill Levels
Free US Shipping
Gem Authenticity Tester: Precision Tool for All Skill Levels
Are you looking for a reliable way to verify the authenticity of your diamonds? Designed for both beginners and seasoned jewelers, this gem tester delivers trustworthy results every time. It addresses common worries about misidentifying stones with exceptional sensitivity and accuracy, making it an essential tool for anyone who wants to confirm the legitimacy of diamonds without needing specialized skills or equipment.

Thanks to its remarkable sensitivity and user-friendly testing process, this gem tester allows for precise differentiation between diamonds and other gemstones. You can save valuable time and eliminate uncertainty with its instant results, accompanied by an audible alert and a bright, easy-to-read LED screen. Its compact and lightweight design makes it perfect for use at home, work, or on the go.

How to Use:
Simply power on the Gem Authenticity Tester and allow it to warm up before use. Ensure the probe tip is steady as you place it against the stone's surface and wait for the result. The sound notification provides additional confidence, and the LED display will confirm whether the stone is genuine. For best results, follow the calibration and handling instructions provided with the tester.

What’s Included:
- One Gem Authenticity Tester
- One protective carrying case
- One User Manual
- One Calibration Tool
Specifications:
- Material: Durable plastic casing
- Dimensions: 6 x 1 x 2 in.
- Powered by one 9V battery (not included)
- Compatible with various gemstones, including diamonds
- LED display with sound alerts for results

Frequently asked questions
Quick answers about ordering from Couje. More detail on our full FAQ page.
How much does shipping cost, and how long does it take?
Shipping is free on every order — no minimum. Orders are typically delivered within 4–12 business days (processing included), and every order includes tracking. Full details are in our Shipping Policy.
What is your return policy?
You can return items within 30 days of delivery. Once your return is received and inspected, we process your refund to the original payment method. See our Return & Refund Policy for the full process.
How do I track my order?
As soon as your order ships, we email you a tracking number. You can follow your delivery at any time on our Track Your Order page.
How can I reach customer service?
Email us at support@couje.com or use our contact form. Our team is available Monday – Friday: 09:00 AM – 05:00 PM EST and replies within 24 hours. Saturday – Sunday: closed.
