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


New Record Set for the World's Most Expensive Diamond at Auction

New Record Set for the World's Most Expensive Diamond at Auction

The Pink Star estimated to sell at $60 m sold for $71.2 m at Sotheby's Hong Kong on 4 April with bidding lasting only 5 minutes, the highest price ever paid for a jewel at auction...

Read more


The Gems&Jewellery Spring Issue 2017 Has Arrived!

The Gems&Jewellery Spring Issue 2017 Has Arrived!

The Gems&Jewellery editorial team are excited to announce the release of Gems&Jewellery Spring 2017 issue Volume 26 / No. 1...

Read more


The Society of Jewellery Historians Celebrate a Ruby Anniversary

The Society of Jewellery Historians Celebrate a Ruby Anniversary

Gem-A Online Distance Learning (ODL) tutor, Barbara Kolator, reports on a fascinating day of lectures at Goldsmiths' Hall to celebrate the ruby anniversary of the Society of Jewellery Historians...

Read more


Birthstone Guide: Rock Crystal for Those Born in April

Birthstone Guide: Rock Crystal for Those Born in April

Julia Griffith FGA DGA EG, gemmology and diamond tutor at Gem-A, reveals the birthstone for April...

Read more


Zircon from Vietnam: Properties and Heat Treatments

Zircon from Vietnam: Properties and Heat Treatments

This article by Guy Lalous ACAM EG summarises a study on the gemmological and physical properties of brown zircon from the Central Highlands of Vietnam...

Read more


An Interview with GCDC Award Winner Julia Neill

An Interview with GCDC Award Winner Julia Neill

Julia Neill was one of the 2017 winners of Gem-A’s contribution to the Goldsmiths' Craft & Design (GCDC) Awards, often referred to in the industry as the 'Jewellery Oscars'...

Read more


The Tale of the Mouawad Blue Diamond

The Tale of the Mouawad Blue Diamond

Jack Ogden FGA looks into the story of the world's second largest blue diamond, the Mouawad Blue Diamond, previously known as the Tereschenko Blue Diamond...

Read more


Whitby Jet: A Discussion of its Simulants

Whitby Jet: A Discussion of its Simulants

Sarah Steele FGA DGA discusses the many simulants of one of Britain’s most famous native gemstones...

Read more