IGR – Italian Gemological Review #22 – Spring 2026 – International Edition

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IGR – Italian Gemological Review #22 – Spring 2026 – International Edition

IN THIS ISSUE:

• Editorial – Will There Be Another Ten Years of IGR? Get up, stand up, don’t give up the fight (Paolo Minieri)

• “Less is more”: Martin Rapaport’s Stone Thrown at the Diamond Industry (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 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)

• GEM NEWS – The New Face of Demantoid: Iran Enters the International Gemmological Scene
• GEM NEWS – Diamonds, Tariffs and Triangulation: India Facing a U.S. Tariff Roller Coaster
• GEM NEWS – How Composition and Structure Influence the Color of Apatites
• GEM NEWS – The Luanda Accord Ushers in a New Era of African Diamond Storytelling
• GEM NEWS – The Science of Color in Freshwater Pearls
• GEM NEWS – Colored Gemstones Outshine Diamonds in Future Market Growth
• GEM NEWS – Gemological Reports Evolve: GIA Redesigns its Colored Stone Reports

• ETHICAL STONES – Ukraine’s War is Wearing Down the Kimberley Process, Now Reduced to a Burning Match No One Wants to Hold (Paolo Minieri)

• 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)

ON THE COVER:

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