Presidium OTI All-In-One Diamond Tester

The Presidium OTI All-In-One Diamond Tester combines dual optical and thermal testing technology into a single probe, delivering fast, reliable diamond authentication for professional jewelers and gemologists. This versatile instrument distinguishes natural diamonds from lab-grown diamonds, moissanite, and common simulants—including glass, sapphire, and cubic zirconia—whether the stone is loose or mounted in any jewelry setting. With a resistive touchscreen interface, ergonomic form factor, and replaceable probe design, the OTI is built for daily professional use in bench or retail environments.

Features

• Dual optical and thermal testing technology combined in a single probe
• Identifies natural diamonds versus lab-grown diamonds, moissanite, and common simulants (glass, sapphire, CZ)
• Tests both loose and mounted stones across all jewelry settings
• Compatible with colorless polished diamonds with a minimum table width of 1.6 mm
• Replaceable probe reduces downtime and extends the working life of the unit
• Clear resistive touchscreen display with 6-language interface
• Ergonomic, portable design suited for bench and point-of-sale use
• User-safe UV light function shuts off automatically when not in use
• Auto shutdown and low-battery indicator for uninterrupted workflow

Specifications

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.