Presidium® OTI All in One Diamond Tester

As a product expert, trust this compact and portable testing device to quickly and accurately identify colorless diamonds against lab-grown diamonds, moissanites, and other diamond simulants. With dual Optical/Thermal testing technology and a replaceable probe, easily test loose or mounted diamonds of varying sizes and cuts (including D-J color) without any damage. A user-safe function and auto shutdown feature add to its convenience, all powered by 3 AAA batteries or a power bank. Manual.