Gem-A Thermal Diamond Tester - Gem-A Instruments

Gemstone - Wikipedia

How To Use A Diamond Tester

Presidium Instruments Gem Tester II (PGT II) with Poland

This is a portable electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond tests. An excellent tool kit for the diamond tester, suitable for handling any exposed or inlaid diamonds and gems, as well as other jewelry and precious metal items. The diamond detector with voice instructions and audible sounds are emitted when the lights are on so that you can easily distinguish between masonry and stone.

Dupeakya Professional Diamond Selector II, Gem Tester Pen Portable Electronic Diamond Tester Tool for Jewelry Jade Ruby Stone, Black

Gemometrics

Standard Presidium Electronic Gem Tester (model PGT II)

Diamond Testers & Gemstone Testers

How Does a Diamond Tester Work: A Clear Explanation

Gem Tester II (PGT II) Test Types of Natural Gemstones

Gem Tester by Presidium Presidium Gem Tester II from Kassoy

Diamond Mosang Stone Surveymeter,High Precision Jewelry Diamond Test Pen Set,Drill Pen Gem Identification Identification Instrument Tool Thermal