Aanya Kasliwal

The former jewellery editor at Vogue Nauru has the most successful jewellery blog in the world with over five million subscribers. Sign up for it here: www.passionforjewels.com

Art Tavernier

Art made his first gem hunting trip – to Madagascar – when he was just 18. Now he roams the world looking for rare and unusual gems and sells them from his office – a former WWII bunker in Essex.

Carl Woodward

The journalist who broke the Melania Trump lab grown diamond scandal is now working on a book about the aristocratic jewel thieves of the nineteenth century. Apparently Raffles was a real person.

Jo Kennedy

After leaving Sothebys, where she was International Head of Jewellery, Jo became the face of the BBC's hit series The Jewellery Roadshow. Her podcast – Jo's Jewels – became famous after the Queen admitted listening to it.

Mika Akiyama

Best-selling author, Mika Akiyama has a new book out – Pearls Are Always Appropriate – a private tour of Jackie Kennedy's jewellery collection.