Art Nouveau masters such as Louis Comfort Tiffany and Émile Gallé turned the most fragile of materials into iridescent masterpieces that shimmered like seashells or glittered like Byzantine mosaics, as Matthew Dennison discovers

A sale of Modern British Art earlier this year brimmed with the kind of wonderful works that auctioneers find a little heart-wrenching to let go, including a Waterfall full of wild windiness by Sir Kyffin Williams

The gargantuan, bewildering Louvre

Fans of the leading British artist David Hockney will know how much he doted on his pet dachshunds. Sold at Phillips last autumn, Little Stanley Sleeping was a poster made for the show ‘David Hockney:

Painting a local cricket match, Sherree Valentine-Daines received an invitation that changed her career and led her to become artist-in-residence at Goodwood

Still Life Flowers in a Jug at Charleston, ...