IGR – Italian Gemological Review #23 – Autumn 2026 – International Edition

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IGR – Italian Gemological Review #23 – Autumn 2026 – International Edition

IN THIS ISSUE:

• Editorial – I Have a Dream: a Possible Gemmology (Paolo Minieri)

• The Diamond View – Are Natural Diamonds Heading Toward a New Market Phase? (Sergio Sorrentino)

• 10X – De Smaragdorum Hydrothermalium Natura, quae in Russia reperiuntur, sed a Natura non generantur. On the Nature of Russian Hydrothermal Emeralds (Unnatural) — in Seven Parts. Part Three – A “Mystery” Within The Mystery. Nutrients, “Dopants”/Coloring Agents, Autoclave Linings: What Do They Have to Do With Refractive Indices and Types of Inclusions? (Luigi Costantini, Alberto Malossi, Claudio Russo, with the collaboration of Flavio Butini and Marco Torelli)

• GEM NEWS – Polar Deposit Nephrite: Metasomatism, Chromium, and Art in Canada’s Green Jade
• GEM NEWS – Acquiring De Beers Will Bring the Diamond Mining Industry Model to a Turning Point
• GEM NEWS – Parma, Italy, to Host Upcoming Workshop Dedicated to Photomicrography Techniques in Gemology
• GEM NEWS – Oxygen Isotopes in Rubies and Sapphires: A New Key to Distinguish Natural and Synthetic Corundum
• GEM NEWS – Swiss International Gemlab (SIG): A New Analytical Laboratory for Colored Gemstones
• GEM NEWS – IGI Acquires AGL for $13.2 Million
• GEM NEWS – TRACR and GIA: The Market Moves, and So Do Blockchains

• ETHICAL STONES – The Giant Myanmar Ruby and the Race to €100 Million: Why Do Gemologists Remain Out of The Picture? (Paolo Minieri)

• 8th Edition of the National Conference of Gemmology. The report from Pavia (Paolo Minieri, Stefania Coppola)

• First Examinations on Paraíba and Other Copper-bearing Tourmalines from Abuloo, Ethiopia (Vincent Pardieu, Christian Dunaigre, Aurélien Delaunay, Stefanos Karampelas)
• comprende gli inserti:
• Vincent Pardieu at IGR: Ethiopian Paraíba and Indicolite, Rushing Ahead of the Data
• The Paraíba Dilemma: Between Scientific Rigor, Market Dynamics, and Diagnostic Challenges (Riccardo Luppi)

• Inside Gemstones: Images that Guide Identification (Thomas Hainschwang, Billie E. Hughes, Giovanni Pace, Francesco Protopapas)

• Two Short Stories About Topaz (Or Perhaps Not), and a Few Questions (Marco Calabrò)

• COUNTER-GEMOLOGY – Two Lives Made Parallel by Gemology: The Tunnel-Digger and the Conference Lecturer  (The “Bad-Mouthed Jiminy Cricket”: Luigi Costantini)

ON THE COVER:

The parcel of tourmalines reportedly from Abuloo area in Ethiopia. (Photo: Vincent Pardieu)