
Transform your diamond authentication process with OTI by Presidium, the next-generation tool designed to deliver rapid, accurate, and reliable testing results. This innovative device integrates dual optical and thermal technologies into a single probe, enabling easy and precise differentiation between natural diamonds and lab-grown diamonds (CVD/HPHT), moissanite, and other common diamond simulants like Glass, Sapphire, and Cubic Zirconia (CZ).
Whether you're testing loose diamonds or mounted stones in any jewelry setting, the OTI by Presidium provides instant verification with minimal downtime. Featuring a resistive touchscreen, ergonomic design, and a multi-language user interface, this sleek, portable device ensures you can perform on-the-spot testing anytime, anywhere. Additionally, the replaceable probe technology and built-in auto-shutdown features make it both cost-effective and long-lasting.
With its high level of accuracy, user safety features (such as UV light shutdown), and easy-to-read results, the OTI by Presidium is the ideal solution for jewelers, gemologists, and diamond experts who demand the highest level of precision in their diamond verification processes.
Dual Optical and Thermal testing for comprehensive verification.
Compact and portable design for easy, on-the-go testing.
Test on both loose and mounted diamonds in all jewelry settings.
Safe and user-friendly, with automatic UV light shut-off when not in use.
Replaceable probe technology to reduce downtime.
6-language user interface for global accessibility.
Stylish ergonomic design for maximum comfort and convenience.
Accurately identify colorless diamonds, CVD/HPHT lab-grown diamonds, all types of moissanite, and common diamond simulants like glass, sapphire, and CZ.
Dual technology in one probe ensures instant, reliable results.
Test on a variety of diamonds, from colorless polished stones to all proportional cuts with a table width of 1.6mm or more.
Convenient, lightweight, and portable for testing anywhere.
Extend battery life with auto shutdown features and low battery indicators.
Yes. Johari Tools supplies genuine jewellery and gemological tools, including brands like Presidium, GemTrue, Motic, Tanita and Gemax, trusted by professional jewellers, gem traders and labs across India.
Yes, we ship all over India from Jaipur. Place your order online and our team will contact you with the best shipping option and charges for your location.
Yes. We are a GST-registered business and provide GST-compliant invoices with the applicable tax rate on all orders.
Yes. We offer wholesale rates on bulk orders. Call or WhatsApp +91-9799178785, or email sales@joharitools.com for a trade quote.
Shop No. 42, Gopal Ji Ka Rasta, Johari Bazaar, Jaipur 302003, Rajasthan - serving the gem and jewellery trade since 2001.
Our jewellery-trade specialists can help you choose the right tool for your work. Call or WhatsApp +91-9799178785 for guidance before you order.