How do gemologists distinguish between different green gemstones? What is the role of a gemologist in the valuation of gemstones for insurance purposes?

May 6, 2022 ... Pinpoint-source illumination. Good gemological microscopes will have an adjustable iris diaphragm that will enable you to reduce the light ... Jan 23, 2025 ... Hello! I am looking for information please. I have a friend looking to get some yogo sapphires faceted,so we're looking for someone to do ... If it does turn out to be a diamond, the only way to properly grade it is to have it physically examined by a jeweler/gemologist/appraiser...then appraised with ... May 31, 2019 ... My first time on here, so be gentle. Does any organization publish a list, or any sort of information regarding which gemological labs are ... Anything else you want to tell us? Submit. Submissions are anonymous, and your feedback will be used ... ... informative Collector's Timeline, a pocket-sized reference guide of jewelry facts. ... The Center provided, and will continue to do so in the spirit by ... May 9, 2020 ... We will not use or share your information with anyone except as described in this Privacy Policy. We use your Personal Information for providing ... Oct 24, 2017 ... ... are extraordinary gem and jewelry experts known as “gemologists ... information, standards, and education for diamonds, gemstones and jewelry. The Smithsonian Institution does not offer monetary evaluations. We have, however, compiled the following information which we trust will be helpful. Antiques, ... Sep 20, 2022 ... What are the concrete tasks of a gemologist, where do gemologists work and how does one become a gemologist? ... Based on information and ...