A selection was photographed by X-Ray and it could clearly be seen that some pearls, which all had a suspiciously uniform appearance, had a large bead under the outer-coating. Scraping revealed two coatings neither of which was a natural crystalline structure, confirming that this was not a freshwater cultured pearl. Further analysis using the Raman Spectrophotometer, X Ray Fluorescence and the electron spectrometer proved conclusively that most of the pearls were man-made imitations a…

 

DON’T FORGET TO BRING YOUR BUSINESS CARDS WITH YOU THERE WILL BE A PRIZE DRAW EVERY DAY OF THE SHOW ON THE STAND WIN CHOCOLATES AND WINE FOR YOUR OWN VALENTINE JUST LEAVE US YOUR BUSINESS CARD AND THE PRIZE COULD BE YOURS!

  Chromium VI is not used within the leather tanning process, but its presence may occur by oxidation of chromium III due to a variety of reasons. For example oxidation of chromium III can occur with extremely high pH or temperature or if chrome powder there is a possibility that it may contain chrome VI as an impurity. Chromium VI is currently under public consideration for inclusion in the REACH regulations whereby its presence in leather would be banned above a 3ppm limit of …