Gem-A英國台灣校友會

這本值得期待！👍

The latest edition of The Journal of Gemmology (Volume 40, No. 1, 2026) is now available for Gem-A Members to read online 📚

In this issue, we take a closer look at a new type of green opalised wood from the Garut region of West Java, Indonesia, and encounter the first documented occurrence of rose quartz from the Hamedan region of western Iran.

Gem Notes covered in this issue include a CVD-grown diamond showing multiple layering under deep-UV radiation, a rare colour-change Co-bearing gahnite, a pink synthetic sapphire with unusual garnet-like inclusions and atypical bead-cultured freshwater pearls with unusual coin-shaped nuclei.

📸 On the cover, we spotlight an emerging source of Chinese emerald in a tungsten-mining area in Zhen’an County, Shaanxi Province, central China. Emeralds from this locality are described in a feature article on pp. 44–65. The stones shown range from 0.30 to 1.33 ct. Photo by Dr Yu-Yu Zheng.

Gem-A Members can access the issue here: https://gem-a.com/publications/the-journal-of-gemmology/volume-40-issue-1-2026/

Become a Member to start receiving our publications. Discover your options here: https://gem-a.com/membership/

Unusual fluorescence in a beryllium-treated ruby 🔬

Fluorescence is a fundamental tool in gemmology, offering a rapid method for detecting potential treatments and providing insights into a gem’s composition and formation history.

Recently, the Gübelin Gem Lab examined a 22.28 ct natural ruby displaying an unusual long-wave UV fluorescence pattern: orange with multiple distinct zones of red fluorescence, along with faint chalky whitish fluorescence near the culet. This rare coexistence of three fluorescence colours prompted further investigation.

Writing in The Journal of Gemmology (Volume 39, No. 8), the authors explain why gemmologists should take note of orange fluorescence, especially when combined with the presence of peaks at 3062 and 2490 cm–1 in FTIR spectra, due to its association with Be-related bonds.

💻 Gem-A Members can read more by accessing The Journal of Gemmology archives online: https://gem-a.com/publications/the-journal-of-gemmology/volume-39-issue-8-2025/

📚 Become a Gem-A Member to receive our magazines: https://gem-a.com/membership/

📸 This 22.28 ct Be-diffused ruby displays an unusual fluorescence pattern under long-wave UV radiation: a mixture of red and orange with chalky whitish luminescence also present. Photo by Fashiel Tamimi, Gübelin Gem Lab.

Did you know you can get a Gem-A qualification entirely online for £220? 🖥️

Our GemIntro course is designed to impart the essential fundamentals of gemmology through engaging videos, helpful chapters, and quick-fire tests.

Complete the course over six-months in your own time and at your own pace to receive an Ofqual Level 2 Award.

Over 11 lessons, you’ll learn key information about gemstones, such as observation techniques, how they interact with light, the treatments available to improve their appearance, and the art of cutting and setting.

We also provide further reading on 32 gemstones so that you can get your fill of gemmology and perhaps consider the Gem-A Gemmology Foundation in the future!

Discover the course and get started today: https://gemintro.gem-a.com/

📸 A zoisite tanzanite crystal that’s half heat-treated, photographed by Gabriel Kleinberg.

The Gem-A Gemmology Foundation course is just the beginning 📚

The next step on your learning journey is the world-renowned Gem-A Gemmology Diploma, which you can study in person, online or at one of our international Accredited Teaching Centres (ATCs).

This course covers a broader range of gemstones, synthetics, and treatments, leading to a deeper understanding of gemmology and the principles of gem testing and identification.

Graduates can apply for Fellowship of Gem-A, allowing them to use the letters FGA after their name. FGA Membership status conveys a level of knowledge, integrity and professionalism that is recognised worldwide.

Courses commence in March and April 2026, so there’s no time like the present.

To find out more and to discover your study options, visit: https://gem-a.com/education/study-gemmology/gemmology-diploma/

Email [email protected] for further insights into your options.

📸 Opal hunting at the Gem-A Conference 2025.

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Some important dates for your 2026 calendar! 📅

Following the huge success of our most recent event, the Gem-A Conference will return on the weekend of November 7-8, 2026, in Central London.

Register your interest in attending today to secure an additional discount on top of our early bird rate once tickets are available to purchase.

Remember, the Gem-A Conference is an unmissable opportunity to network with your fellow gemmologists, researchers, valuers, jewellers, designer-makers, auctioneers and tastemakers from across the globe.

Don’t miss a dynamic series of talks, followed by a busy day of in-person workshops covering everything from grading and pricing through to screening and identification, designed specifically to upskill you in your chosen field.

Stay up to date and add your details here: https://gem-a.com/conference/

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