For more than a millennium, the Deccan Plateau in Central India was home to some of the greatest ruling dynasties in the subcontinent’s history. A region rich in diamonds (thanks to volcanos credited with at least one great extinction in Earth’s geological past), it attracted artists, poets, writers and traders from all over the world. The 16th and 17th centuries represented a cultural apogee, brought to life in this show of 200 treasures including paintings and metalwork.