In 1850, the legendary Koh-i-noor diamond, gem of Eastern potentates, was transferred from the Punjab in India and, in an elaborate ceremony, placed into Queen Victoria’s outstretched hands. This act inaugurated what author Adrienne Munich recognizes in her engaging new book as the empire of diamonds. She tells the story of that ceremony as well as introducing us to South African Diamond mining, diamonds in literature, and the history of the diamond engagement ring.