Welcome to the Gem-A Blog. Here, you will find up-to-date information on the latest news and trends, exclusive features and regular reports from a host of gemmology insiders. Each month we will share highlights from our printed publications and take you behind-the-scenes at our popular Gem Central events. Would you like to submit an article for the Blog? Email us on This email address is being protected from spambots. You need JavaScript enabled to view it.

How to Separate Natural from Synthetic Ametrine using Conventional Equipment

How to Separate Natural from Synthetic Ametrine using Conventional Equipment

Guy Lalous ACAM EG summarises the discovery of features that could be used to distinguish between natural and synthetic ametrine from The Journal of Gemmology; from the orientation of growth striations to the interference patterns caused by twinning.

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Speaker in the Spotlight: Q&A with Evan Caplan

Speaker in the Spotlight: Q&A with Evan Caplan

One of the key speakers at this year's Gem-A Conference, Evan Caplan will discuss everything about the extraordinary gemstone, alexandrite including a little history, information on sources (old and new), colour change, cutting, along with some fun stories about his travels and experiences with alexandrite.

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Magnificent 51ct Dynasty Diamond Unveiled by Russian Mining Giant

Magnificent 51ct Dynasty Diamond Unveiled by Russian Mining Giant

Russian diamond mining company, Alrosa, has unveiled the extraordinary centrepiece to its unique Dynasty collection of five diamonds, the Dynasty Diamond.

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GIA Pioneer and Leading Librarian Dona Dirlam Retires after 38 Years

GIA Pioneer and Leading Librarian Dona Dirlam Retires after 38 Years

The Gemmological Institute of America (GIA) has announced that after 38 years Library and Information Centre Director, Dona Dirlam, has retired, leaving behind a legacy of excellence and a pioneering approach to digitisation of gemmological knowledge.

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Complete Traceability and Ethical Sourcing

Complete Traceability and Ethical Sourcing

Columbia Gem House president, Eric Braunwart, explores the growing popularity of American gemstones and discusses the importance of traceability, ethical sourcing and the millennial consumer with Sarah Jordan.

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Speaker in the Spotlight: Q&A with Samanta & Vladyslav Yavorskyy

Speaker in the Spotlight: Q&A with Samanta & Vladyslav Yavorskyy

A charismatic duo who have turned their lifelong devotion to natural beauty into not only a solid business but also an expression of art; meet the most intriguing team of two in the world of gems, Vladyslav and Samanta Yavorskyy.

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