Presidium OTI All-In-One Diamond Tester Casting Machines & Equipment The built-in heater reaches up

The built-in heater reaches up to 149°F (65°C)

ranging from Extra Extra Extra Coarse (120) through Extra Fine (1500)

or otherwise attached to a wood frame

this control gives jewelers and metalsmiths convenient countertop-level operation—allowing you to override the automatic start feature on compatible Superflow models or to easily start and stop the PGR without reaching for the unit itself

Presidium OTI All-In-One Diamond Tester Casting Machines & Equipment The built-in heater reaches upThe 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 simulantsincluding glass, sapphire, and cubic zirconiawhether the stone is loose or mounted in any jewelry setting. With a resistive