By Max Paradiso

Silk is usually made from the cocoons spun by silkworms - but there is another, much rarer, cloth known as sea silk or byssus, which comes from a clam. Chiara Vigo is thought to be the only person left who can harvest it, spin it and make it shine like gold.

Villagers stare as I knock on the door of Chiara Vigo's studio, otherwise known as the Museum of Byssus, on the Sardinian island of Sant'Antioco. One sign on the door says: "Haste doesn't live here." Another adds: "In this room nothing is for sale."

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Source: http://www.bbc.com/