Presidium OTI All-In-One Diamond Tester Casting Machines & Equipment These are not traditional cut

These are not traditional cut files — they are ceramic-coated burnishing and finishing tools shaped like needle files

GemOro Elite series microscopes feature internationally adaptable 100V–240V multi-voltage power that automatically adjusts to each country's specific voltage

Wood stand holds all four pliers upright for organized bench storage

Two different size mandrel holes to position ring and forming mandrels at the bench

Presidium OTI All-In-One Diamond Tester Casting Machines & Equipment These are not traditional cutThe 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