Testers & Measurements

Precision measurement and testing tools for jewelers — from diamond testers and ring sizers to calipers and mandrels for accurate sizing and quality assessment.

Shop by Category:

  • Diamond Testing and Accessories
    Electronic diamond testers and accessories for identifying genuine diamonds and distinguishing them from simulants and moissanite.
  • Bracelet Size and Mandrels
    Bracelet sizing gauges and mandrels for measuring and forming bracelets and bangles to precise dimensions.
  • Ring Sizing and Mandrels
    Ring mandrels, ring sizers, and sizing sets for accurate ring measurement and forming across standard sizing scales.
  • Calipers
    Digital and analog calipers for measuring stone dimensions, metal thickness, and component sizes with high precision.