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2. International Gemological Institute - Wikipedia

   en.wikipedia.org/wiki/International_Gemological...

   IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, and laser inscription services. They also offers diamond and colored stone courses through IGI's Schools of Gemology. The IGI school was the first to offer the practical Rough Diamond course. [4]

3. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   Shortly thereafter, the institute introduced the "Certified Gemologist" professional designation. [4] Vincent Manson, then Director of Strategic Planning, moved the GIA campus and headquarters to Carlsbad, California. [5] In 2005, an allegation of bribery was made against GIA lab workers, casting doubt on the integrity of diamond grading labs.

4. Material properties of diamond - Wikipedia

   en.wikipedia.org/wiki/Material_properties_of_diamond

   The precise tensile strength of diamond is unknown, though strength up to 60 GPa has been observed, and theoretically it could be as high as 90–225 GPa depending on the sample volume/size, the perfection of diamond lattice and on its orientation: Tensile strength is the highest for the [100] crystal direction (normal to the cubic face ...

5. 'Antiques Roadshow': $30 Ring Turns Out To Be Worth Fortune - AOL

   www.aol.com/entertainment/2014-02-18-antiques...

   What you have is a ring that looks like it's eight to 10 carats from the top, and ... it's a diamond.' The appraiser said the ring dated back to the 1920s or 1930s ... and would be conservatively ...

6. Thermal conductivity measurement - Wikipedia

   en.wikipedia.org/wiki/Thermal_conductivity...

   A thermal conductance tester, one of the instruments of gemology, determines if gems are genuine diamonds using diamond's uniquely high thermal conductivity. For an example, see Measuring Instrument of Heat Conductivity of ITP-MG4 "Zond" (Russia). [25]

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Tumbler knife sharpener review, after weeks of testing - AOL

   www.aol.com/news/tumbler-knife-sharpener-review...

   Tumbler Knife Sharpener $129.00 at Amazon. Tumbler Knife Sharpener $98.00 at Tumbler. The Tumbler knife sharpener ($129) is a manual knife sharpener with two components: a two-sided rolling disc ...

9. 5 types of winter squash you should start eating now - AOL

   www.aol.com/lifestyle/5-types-winter-squash...

   After a summer full of grilled zucchini and yellow squash, now is the perfect time to switch things up and cook some winter squash. So what exactly sets summer and winter squash varieties apart?