A Tunisian history enthusiast is making dye from sea snail shells inspired by a school project decades ago on ancient Carthage and the purple colouring that brought fabulous wealth to the classical world.
Mouhamad Ghassen Nouira works from a hut in his garden to process murex snails using techniques first developed by the Phoenicians to produce a dye known as Tyrian purple that sells online for about $2,500 a gram.
