GemPen Diamond Screener

GemPen Diamonds Screener is used to screen colourless diamonds for HPHT and CVD synthetics and includes Filter 1. It also gives indications on treatments such as the HPHT-treatment.

It is possible to later upgrade your GemPen Diamond Screener by buying the additional filters. We especially recommend adding the LW Filter 4 which will help you distinguish between a natural fluorescing diamond and a synthetic one.