Description
IN THIS ISSUE:
- Editorial – Adjectives vs. Numbers. About old and new gemstone Classification Systems (Luigi Costantini)
- 10X – Our friends the inclusions. The detective at the party of inclusions. Ninth episode (Luigi Costantini and Claudio Russo)
- GEM NEWS – And now where will we get pink diamonds from? The world famous Argyle mine of Rio Tinto stops production after 37 years
- GEM NEWS – Lab-grown diamond reports evolve. IGI adds details on post-growth treatments
- GEM NEWS – Opsydia’s marking technology to replace traditional laser inscriptions on diamonds
- GEM NEWS – All diamonds to be tracked by 2030? The blockchain alliance between De Beers and Alrosa is raising the bar of transparency
- GEM NEWS – Nathan Munier’s book, a wide spectrum economic survey on African diamond producing countries and their compliance to Kimberley Process
- GEM NEWS – Now colored stones may pass the grade under Gübelin Gemstone Rating system. Will the industry follow the lead?
- GEM NEWS – Jewelry brands merge and so LVMH Moët Hennessy-Louis Vuitton buys Tiffany
- A humble tribute to W. William Henneman and to the idea of a gemology accessible to all (Alberto Scarani)
- ETHICAL STONES – Will Angola became no. 1 diamond producer in the world? (Paolo Minieri)
- Collecting the Literature of Jade. A journey from east to west (Richard W. Hughes and Eric Hoffman)
includes the insert:
- What is jade? (Stefania Coppola)
- An overview of Chinese jade ritual artifacts (Domenico Angelino)
- Some introductory notes to jadeite grading (Stefania Coppola)
- The state-controlled jade industry is causing tragic disasters in Myanmar (Domenico Angelino)
- Jade identification with traditional equipment (Francesco Sequino)
- Advanced jadeite identification with spectrophotometry (Alberto Scarani)
- From the analyst’s notebook. Biron synthetic emerald and its identification (Carlo Cumo)
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