1. Highlights : A gemologist is available to answer questions by phone. 2. Roskin is a Graduate Gemologist and Fellow of the Gemmological Association of Great Britain. 3. Carat weight is a gemologist 's standard measure of a diamond's size. 4. Certified or not, you should get the diamond appraised by an independent graduate gemologist . 5. In 2007 and 2008, Soyer worked as a manufacturing jeweller and gemologist in Melbourne. 6. Previn has been married to singer Dory Previn, actress Mia Farrow and gemologist Heather Hales. 7. Tiffany & Co . assembled his first collection under their Chief Gemologist , George Frederick Kunz. 8. The Graduate Gemologist ( G . G . ) diploma offers a comprehensive education in gemology. 9. His last transfer occurred in 1963 to Edmonton, Alberta where he worked as a gemologist . 10. Her sister, Susanna, a gemologist nine years her senior, has long battled excess weight.