Diamond and Mossanite Testers

Diamond Colour GradingGemPen Darkroom allows the professional user to create a portable environment, making it easier to more accurately interpret ...

The GemPen® provides professional users with the means to efficiently determine whether a diamond, ruby, or sapphire is natural, synthetic (man-mad...

The GemPen Filters are to be used as Add On Filters to be used with the GemPen Diamond Screener for testing and verifying Diamond, Rubies and Sapp...