How do gemologists use conoscopic interference figures? How do gemologists determine the market value of a rare or unusual gemstone?

If there are no records or adequate documentation available that provide such information, an appraisal will likely be necessary. How can I protect myself from ... Jewelry appraisals should not be confused with diamond or gemstone grading reports, which can only be provided by major gemological laboratories and which do ... These characteristics can point scientists in a certain direction as to the diamond's identity but aren't always conclusive, however. That's why gemological ... How do you safeguard my private information? The personal information ... Do you have gemologists on staff to help me with my purchase? Yes, you can ... Failure to do so will result in dismissal as a GEM Fellow. You ... All GEM Fellows should contact the appropriate taxing authority for further information. Sep 25, 2024 ... If you disagree with any part of the Privacy Policy, then you do not have our permission to access or use the Website. What information we ... Mar 24, 2022 ... Once a diamond's 4Cs have been assessed by a gemologist, they register this information in a diamond grading report. ... What are diamond grading ... A "complete" engagement ring combines a loose center diamond set in one of our designer mountings. Do you have a gemologist on staff? Mar 3, 2025 ... What is a gemologist? A gemologist is a trained individual who identifies and grades precious gems and jewels. Most gemologists hold a license ... The Smithsonian Institution does not offer monetary evaluations. We have, however, compiled the following information which we trust will be helpful. Antiques, ...