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and precision workshop applications
A must-have book for every goldsmith
Highly polished dividers made of spring steel with hardened
High precision device to cut rods or tubing up to 5mm round and 4mm square
mining and processing
*NEW* Jewellery Inspector - Gemetrix Gravers and precision workshop applicationsBoth the Jewellery Inspector and the PL Inspector allow 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
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