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Determination of Emerald Origin Through the Identification of Solid Inclusions

Issue 56 Gemstones T. Rozet, V. Fejoz, A. Arsac, M.P.H. Curti and W. Oei -
Introduction The study of solid inclusions (Figure 1) remains one of the most relevant sources of information for determining the geographic origin of gemstones. The...
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TPS 2026 To Take Place in Detroit

Issue 56 Industry News InColor -
The Symposium for the Advancement of Jewelry Manufacturing Technology (TPS), now in its fourth year, is a passionate, collaborative, non-commercial, non-profit, global community inspiring...
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The Laboratory Manual Harmonisation Committee (LMHC)

Issue 56 Gem Nomenclature Dr. Michael S. Krzemnicki, Dr Laurent E. Cartier, Claudio C. Milisenda, Kentaro Emori, Shane McClure, Pierre Hardy, Thanong Leelawatanasuk and Antonello Donini -
Many in the trade may have already heard about the Laboratory Manual Harmonisation Committee (LMHC), founded 25 years ago as an essential group of...
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Royal Provenance, Modern Brilliance

Issue 56 Auctions Ioannis Alexandris -
The November/December 2025 auctions delivered a spectacular sequence of sales, with some of the most historically compelling and visually arresting jewels to appear at...
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Amethyst’s Regal Allure

Issue 56 Gemstones Lauriane Lognay -
Re-visiting a gemstone that has been in the jewelry world for hundreds of years—and written about many thousands of times—can be a daunting task....
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Confronting new sensibilities in the year ahead

Issue 56 ICA Report Douglas Hucker -
No doubt, many in our industry are eyeing Tucson as a harbinger of how the coming year might play out. It is clear that...
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Fei Cui Global Supply Chain Research – Update

Issue 56 Gemstones InColor -
During the Christmas to New Year 2024/2025 period and throughout 2025, the Guild Field Expedition Team traveled to Fei Cui producing areas and market...
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Rediscovering Spinel: A Legacy Reborn

Issue 56 Gemstones Rahul Jain -
There is a quiet poetry to spinel—a gemstone that has adorned the crowns of kings, yet spent centuries living under another’s name. In the...
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Riding the Waves Through Rough Times

Issue 56 ICA Report Damien Cody -
As 2026 begins, we find ourselves continuing to operate in uncertain times. Across the globe, we face economic downturns that shake confidence. Political unrest that...
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PANTONE’S Color of the Year Is WHITE

Issue 56 Industry News InColor -
Describing it as A Whisper of Tranquility and Peace in a Noisy World, Pantone introduced its Color of the Year 2026, PANTONE 11-4201 Cloud...
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Issue 56 - Winter 2026

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Book Reviews

Book Reviews

The Historic Teachings of Gemcutting

Issue 56 InColor Cynthia Unninayar -
As its title implies, this book presents a detailed, scholarly, and engaging journey through the long, intricate history of gemstone cutting—a craft that sits at the intersection of artistry, geometry, gemology, and human ingenuity. From its opening chapters, the authors demonstrate a deep command of the subject, weaving together archaeological...
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Book Reviews

Talking Fei Cui Jade

Issue 47 InColor InColor -
Fei cui jade is highly appreciated in Eastern cultures for its beauty, power and good fortune, with rising interest in the Western world. The record prices received at auction as well as the growing demand for this remarkable gemstone bring us visit the book Fei Cui Jade – A...
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Book Reviews

The Smithsonian National Gem Collection – Unearthed

InColor Richard Drucker -
Estimated reading time: 6 minutes Knowing Jeffrey Post personally and having been to the back room of the Smithsonian Gem Hall, when I heard of this book being available, I knew it would be a must-have for my library. I was not disappointed and the praises that appear here...
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InColor magazine is the ICA's quarterly publication, all about colored gemstones. A must read for anyone in the gemstone and jewelry industry, as well as the gem enthusiast. InColor reports on information relating to the gemstone trade, mining, gemology, education, trends, fashion as well as ICA member related issues.
Contact us: ica@gemstone.org

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