Presidium Diamond Mate-C Electronic Diamond Tester Czech Glass This is a new set

This is a new set of 3 black velvet display pad inserts

Each measures approximately 14 3/4" x 8 1/4" x 1 1/2"

Twelve 21 mm (0

It measures approximately 9 3/8" x 10 7/8" (238 x 276 mm)

Presidium Diamond Mate-C Electronic Diamond Tester Czech Glass This is a new setPocket sized instrument that instantly verifies the authenticity of diamonds based on their thermal properties. The Presidium Diamond Mate Tester (PDMT) has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industrys thinnest probe tip size of 0. 6mm, PDMT tests diamonds as small as 0. 02ct. Test results are instantly indicated by an LED light and continuous audible beep.