Stella McCartney has a knack for nowness. Forecasting fashion's most interesting trends months ahead of the pack, it seems she's also been swotting up on culture. This necklace reminds us of one of Alexander Calder's mobile sculptures, whose work will incidentally be on display at the Tate Modern in November. The purity in the design definitely positions it somewhere between a fine piece of jewellery and an art object.

Text by Nazanin Shahnavaz