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Mon May 21, 2018 11:55 pm

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Thu May 17, 2018 12:38 pm

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Sat May 12, 2018 2:17 pm

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Mon May 08, 2017 9:33 pm

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Sun Feb 11, 2018 12:42 am

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Thomas Hainschwang's & Frank Notari's GGTL is on the cutting edge of international gemological research.

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Fri Mar 27, 2015 10:24 am

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Sat Nov 11, 2017 5:30 pm

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Fri May 11, 2018 12:51 am

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Thu Apr 05, 2018 4:20 pm

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Mon Jan 18, 2016 10:13 am

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The Swiss Gemmological Institute, SSEF, has made significant discoveries and developments in the world of gemmology since its founding in 1974.

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Wed Feb 28, 2018 5:31 pm

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Sun May 20, 2018 10:39 pm

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Sat Jun 16, 2018 7:54 pm

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Sat Jun 02, 2018 6:10 pm

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Thu Jun 21, 2018 6:02 pm

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Wed Feb 28, 2018 4:27 pm

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Wed Jun 13, 2018 7:51 pm

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Thu May 10, 2018 2:46 pm

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Tue Jun 19, 2018 8:15 pm

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Thu Jun 21, 2018 9:52 pm

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Mon Feb 26, 2018 7:40 am

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Tue Sep 19, 2017 3:26 pm

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Sun May 27, 2018 5:54 pm

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Tue May 29, 2018 3:58 pm

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Wed Jun 20, 2018 10:48 pm

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Fri Apr 27, 2018 7:50 pm

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Mon Jun 18, 2018 5:22 am

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Mon Jun 04, 2018 9:47 am

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Wed Jun 13, 2018 11:07 pm

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Mon Jun 18, 2018 8:19 am

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Thu May 17, 2018 12:19 am

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Mon Apr 25, 2016 8:05 pm

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Mon May 28, 2018 3:14 pm

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Fri Apr 06, 2018 8:36 pm

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Sun May 06, 2018 3:16 pm

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Miscellaneous

 
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Sat Jun 16, 2018 1:58 pm

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Thu Jun 14, 2018 9:03 pm

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Tue Apr 10, 2018 7:00 pm

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Mon Jun 18, 2018 1:19 pm

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Tue May 15, 2018 11:54 am

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Details and descriptions of gem and jewelry related scams. BEWARE!

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Sun Jun 03, 2018 10:14 am

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