Nick Steur balances stones. You might well wonder, how fascinating can it be?

The setting obviously demands absolute silence. There's no room for coughing, sneezing, wheezing or breathing, when he's about to take his hands away from his latest sculpture.

He selects stones from those he has gathered, from fist-size up to the length of your forearm, and accepts donations from the audience - round, flat, long, jagged, whatever.

He then stacks them on reflective glass cubes as his balancing platform, sometimes piling them three high with a fourth for counter-weighting.

Each foundation piece screeches on its sheer surface with unwelcome abrasion as it is placed by Steur.

At Monday's show, he had a particularly tricky job with a triangular, slate-coloured stone but, with some persistence, and the permission from his audience to “adapt” (ie, re-orientate it), he managed.

“You have to listen to the stones,” he said afterwards. And in the dead silence of the room, with his rock-solid concentration, it seemed he might well be.

You can almost hear the blood pumping through the spectators either side of you – a pulse that quickened for everyone when one pile of rocks gave way and, with an almighty crash, smashed their podium to smithereens.

Dramatic and, yes, fascinating.

Five stars