The PL-Inspector (PhotoLuminescence Inspector) allows observation of fluorescence and phosphorescence from short-wave (SW) and long-wave (LW) ultra-violet illumination. These observations can help a gemmologist determine whether a diamond or gem is synthetic or treated. The colour and intensity of the fluorescence provides a useful indicator, with a common test being whether the SW intensity is brighter than the LW, thereby suggestive of a synthetic diamond.
The PL-Inspector has an inspection viewing area of 15 x 15 mm. (For parcels of stones or jewellery pieces, the Jewellery Inspector provides a 50 x 50 mm viewing area.) Coupled with an optional battery power pack it becomes a pocket travel unit, ideal for trade events - to identify, for example, if a diamond is synthetic or treated.
Click here to view a yellow diamond that shows blue fluorescence under ultra-violet light - and see how it is is possible to distinguish between a natural and synthetic diamond. For practical workshops on natural, treated and synthetic diamonds and how to use the PL-inspector and other portable instruments visit www.gemconference.com
A quick guide to using a PL-Inspector can be downloaded here (PDF file).
Use the Gemetrix Mobile App to allow your smartphone's camera to take and compare PL-Inspector images.