Book excerpt: A study of works of art produced under Sikh patronage, marking the 300th anniversary of the Sikh brotherhood. Illustrations include some of the finest pieces from the treasury of Maharaja Ranjit Singh, who expanded Sikh rule in North India from 1801 to 1839, and works of art collected by Ranjit Singh, one of the most colourful figures in Sikh history, who acquired the Koh-i-noor diamond. Jewellery, gemstones and textiles, weapons and armour, and paintings and contemporary photographs combine in an attempt to provide a comprehensive picture of Sikh art and culture. The religion of the Sikhs is also explained through paintings, calligraphy and the arts of the book.