GE patent could hinder color treatment identification.(General Electric, diamonds)(Brief Article)
Israel Diamonds, June, 2001
It may just be getting more difficult to identify a color treated diamond. General Electric, the company that developed the high-pressure high-temperature (HPHT) process that changes top-light-brown diamonds into D-E-F colorless diamonds, has released two of its international patent applications, and some believe that the company wants to own the HPHT identification process. This would leave the world's diamond grading laboratories in violation of patent laws if they issue identification reports on HPHT-enhanced diamonds.
Interestingly, the applications are dated October 29, 1999--four months after Lazare Kaplan-GE's partner through its subsidiary, Pegasus Overseas Limited (GE POL)--claimed there was no way to identify these diamonds as treated. Clearly, at...
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