IGR – Italian Gemological Review #22 – Spring 2026

IGR 22 ENG


You can purchase IGR – Italian Gemological Review Issue #22 with the 2025/26 subscription!

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IN THIS ISSUE:

Paolo Minieri Editoriale IGR 20

sergio sorrentino igr 19

russian hydrothermal emeralds igr 21

  • 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 Two – The Mystery of Russian Hydrothermal Synthetic Emeralds: Why So Many Questions Surrounding How, When, Where, and in What Quantities They Appeared on the Scene — Always Shrouded in an Aura of Mystery? (Luigi Costantini, Alberto Malossi, Claudio Russo, with the collaboration of Flavio Butini and Marco Torelli)

  • Sources of Information in Gemology: IGR in Conversation with Brendan Laurs (Michele Macrì)

  • Gemological Photomicrography: Evolution, Method and the Language of the Image (Liviano Soprani)

  • Marco Tironi: From Mineral Research to Sustainable Mining in Brazil (Stefania Coppola)

  • REVIEWS – All Cutting Styles, Viewed Through their Historical Perspective, Outline a True Aesthetics of Gemstones. Justin K Prim and Victoria Raynaud’s Ultimate Book (Paolo Minieri)

  • COUNTER-GEMOLOGY – The Louvre Heist: Utter Bungling – c’est tout à rire, Even From a Gemological Perspective (The “Bad-Mouthed Jiminy Cricket”: Luigi Costantini)

cover 22 eng

ON THE COVER:

Tourmaline (rubellite variety) on lepidolite. Cruzeiro mine, São José da Safira (Minas Gerais, Brazil). (Photo: Marco Tironi)


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AUTHORS AND COLLABORATORS:

The following people contributed to this issue: Domenico Angelino, Flavio Butini, Marco Calabrò, Stefania Coppola, Luigi Costantini, Brendan Laurs, Michele Macrì, Alberto Malossi, Paolo Minieri, Claudio Russo, Alberto Scarani, Liviano Soprani, Sergio Sorrentino, Marco Tironi, Marco Torelli


SPONSORS AND SUPPORTERS:

We would like to thank the companies that contributed to the development and printing of this issue as sponsors and supporters: Agemina Gioielli, Catawiki, Diamondsonline, Gem Tech, Gemmarum Lapidator, IGI International Gemological Institute Italy, Lineagem, MAGILABS, Malossi Gemmecreate, Martinez Diamanti, Minieri Gemme, WPS di Marco Longhi.

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