Why Gold Kings recommends it
We would consider the PDMT-A for a jewelry inspection routine that already includes further checks. The handheld format, low-battery indication and metal-contact warning help support a consistent first screening step. The main buying question is whether thermal screening answers the question you need to investigate.
Features and specifications
- Thermal-conductivity screening.
- Metal-contact alert.
- Low-battery indication.
Gold Kings buying advice
Practice the manufacturer’s probe technique and take care around metal settings. A thermal response alone does not reliably distinguish every simulant, including moissanite, and cannot establish natural versus laboratory-grown origin. Use the result to decide what further testing is needed, not as a grade or appraisal.
Related Gold Guide: why diamond origin matters.
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