Published on 10-01-2015 01:41 PM
It was the first time in my 44 years in this business that I have stopped at a major show booth and interrupted the presentation of an exhibitor regarding claims they were making to the audience. The claims that the Gemlogis Taupe Diamond Segregator could positively separate natural, earth-mined diamonds from lab created diamonds and HPHT treated diamonds was and is, simply not true. The technology used by this tool is not new, utilizing ultraviolet light to separate Type I diamonds from Type II, based on the transparency of Type II Diamonds to short wave UV light.
Shortly after my report on this subject, I was contacted by the folks at Gemlogis USA with very cordial communications asking if I could make suggestions as to how they could better present their product, and more accurately describe what it could do. I was more than happy to do this as the unit has potential if the test results are put into the proper perspective regarding what it can and cannot do. The company made significant changes in their handbook description and actual unit wording. You can see this below. The unit no longer claims to be able to positively identify lab created diamonds or HPHT treated diamonds, but now properly identifies that it can present evidence that diamonds getting the proper reaction "may be synthetic / CVD" or "may be HPHT treated". The question still loomed, however, regarding the other side of the test results that diamonds that react with the green side are indeed "Not synthetic" and "Not HPHT treated".
This is where problems have presented themselves with the updates.