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 editor@gem-a.com


ALROSA Extract their Largest Fancy-Coloured Diamond of 2017

ALROSA Extract their Largest Fancy-Coloured Diamond of 2017

A magnificent yellow diamond weighing in at a remarkable 34.17 carats has been extracted by ALROSA's affiliate, Almazy Anabara, making it the largest fancy-coloured rough diamond discovered by the company this year.

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Quick Guide to Opals

Quick Guide to Opals

As more and more retailers react to the growing popularity of opals in commercial jewellery collections, Gem-A Instruments Manager Samantha Lloyd FGA EG offers a quick, but essential guide to opal value factors.

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An Update on Identification Features of Treated Baltic Amber

An Update on Identification Features of Treated Baltic Amber

Guy Lalous ACAM EG explores a detailed characterization of Baltic amber samples treated in experiments by Wang et al.(2014) in The Journal of Gemmology, whilst discussing the criteria for identifying heat-treated amber using standard gemmological instruments, FTIR and Raman spectroscopy.

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Speaker in the Spotlight: Q&A with Adonis Pouroulis

Speaker in the Spotlight: Q&A with Adonis Pouroulis

Adonis Pouroulis, Non-Executive Chairman of Petra Diamonds is an expert entrepreneur in the exploration and mining of natural sources from diamonds to base metals across Africa. As a leading independent diamond mining company, Petra is a key supplier of some of the most culturally significant stones, involving the sorting, mining, processing and sale of rough diamonds.

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Graff Diamonds buys 1,109ct Lesedi La Rona Diamond for $54m

Graff Diamonds buys 1,109ct Lesedi La Rona Diamond for $54m

The second largest gem-quality diamond ever discovered has been sold privately to Graff Diamonds for a staggering $53 million.

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Birthstone Guide: Tourmaline for Those Born in October

Birthstone Guide: Tourmaline for Those Born in October

Gem-A gemmology and diamond tutor, Julia Griffith FGA DGA EG, looks at tourmaline, the enchanting rainbow-coloured birthstone for October.

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The Role of Fingerprinting Technology in the Fight Against the Ivory Trade

The Role of Fingerprinting Technology in the Fight Against the Ivory Trade

Barbara Kolator B.Sc. M.Sc. FGA DGA EG speaks with Dr. Leon Barron, senior lecturer in Forensic Science at Kings' College London about some innovative fingerprinting technology with implications for gemmologists, antique dealers, and wildlife conservationists worldwide.

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The Forbidden Road to Chila

The Forbidden Road to Chila

Simon Bruce-Lockhart FGA DGA EG, travels to Ethiopia to uncover the truth behind the Aksum sapphire fields and find out why this restricted-access area is such a fascinating place for gemstone discovery.

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