Welcome to your Darkroom
GemPen® Darkroom allows the professional user to create a portable environment, making it easier to more accurately interpret results. This complimentary tool contains a UVB protective filter viewing lens to better observe fluorescence and phosphorescence effects in natural, synthetic and treated gemstones. The Darkroom allows the user to work hands-free with their GemPen® and has three variable functions: screening single stones, multiple stones and rings.
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