Presidium OTi – All-in-one combination testing device for diamonds

The Presidium OTi sets new standards in diamond authentication. With its unique optical/thermal dual technology in a single probe, it enables fast, accurate and cost-effective differentiation between natural diamonds, CVD/HPHT lab-grown diamonds, moissanites and common imitations such as glass, sapphire and cubic zirconia (CZ).

Thanks to its compact, portable design, the OTi is suitable for use both in the shop and on the go. The resistive touchscreen with multilingual user interface ensures easy operation, while the automatic shutdown of the UV light source ensures safety and energy efficiency.

Advantages & features:
• Reliable identification of colourless diamonds and differentiation between synthetic stones and imitations
• Dual optical/thermal technology for instant results
• Suitable for loose and mounted diamonds in all jewellery settings
• Compact, lightweight and portable (105 × 70 × 25 mm, only 60 g)
• User-friendly with touchscreen, battery level indicator and 6 languages
• Replaceable test tip to minimise downtime

The OTi from Presidium is the ideal tool for jewellers, dealers and appraisers who value security, precision and trust.

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Only valid for orders submitted on 13 December 2025 and only while stocks last. Cannot be combined with other discount promotions.

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