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Diamond and jewellery certification specialist GSI has tapped Jonathan Tack as its new executive vice president of business development
GSI president Debbie Azar to create ‘positive impact’ on world’s diamond mining communities through...
Diamonds Do Good was founded in 2006 with the aim of bringing about change in and telling positive stories from diamond mining communities around the world
Laboratory in Jaipur, India will feature all of GSI's core services as well as specialising in coloured gemstone geographical origin and identification
Debbie Azar, co-founder and CEO of Gemological Science International (GSI), sat down with Professional Jeweller to talk all things GSI. The lively conversation covered points such as...
Laboratory-Grown Diamond Essentials course can be completed online by users around the world
GSI is one of the largest gemological organisations in the world, founded in New York in 2005 and now spanning four continents
The report is one of the most comprehensive available on the market today for man-made stones.
Founder and chief executive officer of Gemological Science International (GSI)), Mark Gershburg, has made the decision to step down as director of US Kimberley...