Book excerpt: Louis Comfort Tiffany was highly skilled in jewellery design, ceramics, enamels, and metalwork but he is best known for his beautiful stained-glass designs. Using opalescent glass in a variety of colours and textures, he created a stunning range of jewel-like Art Nouveau works that influenced much of American modern art. This sumptuous new book features page after page of astounding work, showing Tiffany's skill as a colourist and a craftsman, with works that still inspire artists and audiences today.