Words and writing were as much a part of Basquiat's art as his visual imagery
The sheer scale of the Guggenheim's display makes it impossible to box Futurism into its usual uneasy categories
The BMA tries to graft German Expressionism onto a French family tree, but it shouldn't overlook the movement's specific concerns
'Artist of gems' Joel A. Rosenthal measures the value of a stone not in carats but in colour. His designs sparkle at the Metropolitan Museum
Some extraordinary Dutch masterpieces from the Mauritshuis are spending the winter at the Frick Collection in New York
