Latest Issue

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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Putting Colorful Gemstones to Paper

Issue 56 Industry News InColor -
Acclaimed jewelry designer and artist, Rémy Rotenier, has unveiled his latest creative project: an inspiring activity book that merges art, gemstones, and creativity for...
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Truly Precious Is Now a Legal Foundation

Issue 56 Industry News InColor -
The organization, Truly Precious, was founded by Danielle Keller Aviram, Véronique Ribbink, Tatjana Li, and Joy Harvey to share and enable research that provides...
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Precious corals and genomic transparency

Issue 56 Gemstones Dr Laurent E. Cartier, Dr. Bertalan Lendvay, Dr. Akitsugu Sato and Dr. Michael S. Krzemnicki -
Precious corals have been coveted across different continents and are some of the oldest gems used by humans. Historically, they were found in the...
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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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Women in the Colored Gemstone Industry

Issue 56 Women & Gems Cynthia Unninayar -
In an industry long dominated by men, women are increasingly making their mark in the colored gemstone sector. They are directly involved in the...
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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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The Trade Meets Science at a Trade-Technical Conferencein Dubai in March 2026

Issue 56 Industry News InColor -
Organized by BrankoGems, in collaboration with the World Academy of Design (WAOD), the 3rd International BrankoGems Conference and Show will be held in Dubai,...
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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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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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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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