The lines of grey stone, the birdsong, the stillness, the lengthening shadows were still a refuge.

BBC: Following the Silk Road to the end of China

We soon passed a damaged, burned-out, grey stone shrine, the cause of much tension even today.

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Carved in grey stone, the great Chinese traveller looked like the kind of chap who would have difficulty running to catch a bus.

BBC: Following the Silk Road to the end of China

Down the old, cold grey stone steps to the antiquated bookshop that lends the establishment its name, I found clues to the area's most charismatic corners.

BBC: A tale of two Berlins

The grey stone of apartment houses is strewn with graffiti.

BBC: A tale of two Berlins

Inside one of the classrooms of the grey 19th Century stone school building, there is a different kind of lesson going on.

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They go to a lonely country house, inhabited by a pair of wealthy oddballs called Flower (Charles Durning) and Stone (Joel Grey), who trounce Pozzi at poker and then demand an unusual repayment: he and Nashe must build a stone wall in the grounds.

NEWYORKER: The Music of Chance

It is a brownish grey, with a few bits of stone mixed in.

BBC: Eyewitness: The night the Wall came down