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The Gübelin Gem Museum

Issue 56 Museum InColor -
Situated in the Swiss city of Lucerne, the Gübelin Gem Museum opens a window into the captivating world of colored gemstones, tracing their origins,...
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The HKTDC Twin Jewelry Shows to Shine in March 2026

Issue 56 Industry News InColor -
The twin jewelry shows organized by the Hong Kong Trade Development Council will open in March 2026. The 42nd HKTDC-organized Hong Kong International Jewellery...
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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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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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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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GIT 2025 – Concludes on a Successful Note

Issue 56 Industry News InColor -
The 8th International Gem and Jewelry Conference (GIT 2025) under the theme Responsible Gem & Jewelry Supply Chain, was held on 8–9 September 2025...
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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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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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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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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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