Presidium is the first company in the world to launch numerous gemological instruments.More
A-Source by Presidium
Presidium is the world’s leading manufacturer of gemological instruments that test and measure diamonds and gems, for the gemstones industries.
It is committed to research and develop innovative instruments for the jewelry industry's benefit.Less
Tester of diamonds and moissanites by thermal and electrical conductivity. Highly sensitive and resistant tip, with visual and auditory indication. Unit of sale: One unit
Digital caliper that measures and estimates the weight of the stones. Conversion table inside with 9 types of different sizes. Sales unit: One unit