- 1. The Hardness of Fei Cui Jade | A Gemological Perspective
- (Articles)
- ... was relatively simple to separate jadeite (a pyroxene jade rock) and nephrite (an amphibole jade rock). However the discovery that many gems labelled as "jadeite" also contain varying amounts of other clinopyroxenes ...
- Created on January 03, 2024
- 2. Gem Testing Reports at Lotus Gemology | FAQs
- (Lab)
- Frequently asked questions regarding Lotus Gemology's gem testing, gem origin determination and gemstone treatment identification reports. ...
- Created on March 19, 2020
- 3. FTIR in Gem Testing | A Pink Sapphire Lesson
- (Articles)
- ... Gem Testing • A Pink Sapphire Lesson In January 2020, a pair of earrings were brought to Lotus Gemology's Bangkok lab for testing. We were asked to test the pink sapphire at the center of each earring ...
- Created on January 21, 2020
- 4. Book | Jade | A Gemologist's Guide | 202
- (Books)
- Jade • A Gemologist's Guide Richard W. Hughes, editor | 2022 The study of jade is unlike any other gem, trespassing across all conventional boundaries, particularly those of the gemological and ...
- Created on August 24, 2019
- 5. How to Choose the Best Colored Gem Testing Lab
- (Articles)
- How does one go about choosing a good gem testing lab? The gemologists at Lotus Gemology provide the following guide to help customers make the best decisions when choosing a good gem testing lab. Choosing ...
- Created on August 21, 2019
- 6. Ruby & Sapphire (Corundum) Inclusions | The Lotus Gemology Crystal Registry
- (Articles)
- Solid inclusions have been used by gemologists as a means of determining origin. While there is a great deal of overlap from one source to another, there are also important differences. For example, ...
- Created on May 31, 2019
- 7. Inclusions in Gemstones | Hyperion Literature Sources
- (Articles)
- For those who wish to explore the literature of inclusions in gemstones further, we have selected the following articles and books that are of particular merit. Most of these are cited in the Lotus Gemology Hyperion ...
- Created on January 22, 2016
- 8. Lotus Gemology Report Lookup Guide
- (Articles)
- The best way to check the authenticity of a Lotus report is with online report verification. Lotus Gemology Report Lookup Guide Reports can be verified with a combination of the Report Number and ...
- Created on August 27, 2015
- 9. Lotus Gemology Price List
- (Uncategorised)
- Lotus Gemology produces what we feel are the finest gem testing reports in the gemological field. Each report includes gemstone identification, treatment identification and, in certain cases (mainly ruby, ...
- Created on July 04, 2014
- 10. Pleochroism in Faceted Gems | An Introduction
- (Articles)
- The phenomenon of pleochroism in doubly refractive (DR) gemstones is described, as it relates to overall color appearance in the context of faceted gems. With strongly pleochroic gems, pleochroism can ...
- Created on May 03, 2014
- 11. FTIR in Gem Testing | FTIR Intrigue
- (Articles)
- The use of Fourier-Transform Infrared Spectroscopy (FTIR) in gem identification, with examples of sapphire & jadeite. Introduction to Infrared Spectroscopy (FTIR) in Gemology Most gemologists are ...
- Created on April 25, 2014
- 12. Gem Testing with the Spectroscope
- (Articles)
- Many gemologists have difficulty mastering the direct-vision spectroscope. This article eases the pain. Gem testing laboratories make use of a variety of instruments, both high-brow and low. Of primary ...
- Created on March 09, 2014
- 13. Lotus Gemology Publications | Substance
- (Library)
- Lotus Gemology Publications • Substance Below we provide a listing of the various publications that Lotus Gemology's team has been involved with. Sadly, because internet links so often change, we have ...
- Created on February 27, 2014
- 14. Book | Jade | A Gemologist's Guide | Order Pag
- (Uncategorised)
- Introducing… Jade • A Gemologist's Guide edited by Richard W. Hughes featuring contributions from… Ahmadjan Abduriyim • Dale Blankenship • George E. Harlow • Eric J. Hoffman • E. Billie ...
- Created on February 26, 2014
- 15. Book | Jade | A Gemologist's Guide | Limited Edition Order Pag
- (Uncategorised)
- Thank you for reserving Jade • A Gemologist's Guide Limited Edition To proceed with your order, please select your shipping destination below. This page is for clients that reserved single copies ...
- Created on February 26, 2014
- 16. Burmese Jade | The Inscrutable Gem
- (Articles)
- ... (1662–1722 AD) , as quoted by Gump, 1962 Burmese Jade • The Inscrutable Gem The track leads down to a small encampment. As the sun's first glow appears, its aura illuminates a Yunnan trader preparing ...
- Created on January 27, 2014
- 17. Heat Seeker | UV Fluorescence as a Gemological Tool
- (Articles)
- One of the greatest gemological challenges is determining if a ruby or sapphire has been heat treated. UV fluorescence can assist in that identification, as well as detecting fillers in emerald. One ...
- Created on January 07, 2014
- 18. Fiber-Optic Light in Gemology | Living in the Dark Ages
- (Articles)
- The role of fiber-optic lighting in gemological microscopy. What I give form to in daylight is only one per cent of what I have seen in darkness. M.C. Escher (1898–1972) A gemologist’s life would ...
- Created on January 01, 2014
- 19. From Fei Cui to Jadeite and Back | Questions and Answers
- (Articles)
- Recent studies show that the gem known throughout the non-Chinese world as "jadeite" jade is actually a rock composed of three major mineral components – jadeite, omphacite and kosmochlor. These components ...
- Created on January 03, 2024
- 20. Blue Apatite in Tanzanian Garnet
- (Articles)
- ... appearance may help gemologists recognize the material in other samples, but further analysis should be performed to identify them definitively. About the Author Acknowledgements Specimen courtesy ...
- Created on January 03, 2024