Why Gold Kings recommends it
We like the idea of comparing evidence from two methods when a visual impression or single reading leaves questions. The Duo Tester II brings two approaches into a bench instrument, with automatic thermal calibration among its listed features. It is a considered choice for someone building gem-testing skills and willing to learn when each method is appropriate.
Features and specifications
- Duo Tester II model.
- Combines two gemstone testing approaches.
- Automatic thermal calibration feature.
Gold Kings buying advice
Check the instructions for each method’s requirements, including mounted versus loose stones and suitable testing surfaces. The instrument does not resolve every treatment or establish natural origin in every case. Use it as part of an identification process, with expert confirmation for valuable or uncertain material.
Related Gold Guide: diamond origin and resale.
Reviews
There are no reviews yet.