The Jewellery Inspector allows observation of fluorescence and phosphorescence from SW (short wave) and LW (long-wave) ultra-violet illumination. These observations can help a gemmologist determine whether a diamond or gem is synthetic, treated or natural. The colour and intensity of the fluorescence provides a useful indicator. A common test is to determine whether the SW intensity is brighter than the LW, which is suggestive of a synthetic diamond. The Jewellery Inspector features ultra-violet lamps to excite any HPHT diamonds which will then phosphoresce. The glow can be readily detected with the camera on a user's smart-phone. Short-wave ultra-violet at 255 nm, Long-wave ultra-violet at 370 nm, Inspection viewing area of 50 mm x 50 mm, Size: 130 x 80 x 50 mm, Supplied with 12 V power adapter,