Testers

Gesswein carries a full range of gold, diamond, moissanite and gem testers.
Diamond Testers

Diamond, Moissanite and Gem Testers

Diamond, Moissanite and Gem testers.

Gold Testers

Gold Testers

Gesswein carries a full range of gold testers from acid testing to electronic to smartphone gold testing.

Replacement Pen Probe for the Presidium Gem Tester II | Gesswein
Replacement Pen Probe for the Presidium® Gem Tester II