Ethical diamond rocks 

The jewel trade, where big-money deals are finalised with a handshake, has always had a sexy image.

Neil Duttson varies his route to work each day. When making a delivery or purchase in Antwerp, Tel Aviv, New York or London, a bodyguard accompanies him. At meetings with suited-and-booted clients in the City, he has been known to wear threadbare jeans and T-shirt. "It's just a precaution," he says. "Other times I might wear a Richard James suit."

Duttson is a diamond broker and jewellery designer. He provides a "bespoke gem-buying service". That means finding diamonds for rich clients, then designing the jewellery within which those lumps of tetrahedrally bonded carbon atoms can sparkle.