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.