gems, corundum, India.12, ruby, garnet

Newbold describes occurrences of corundum, ruby, and garnet in southern India, giving localities and observations on their geological associations and modes of occurrence. Particular attention is paid to corundum deposits and their distribution, together with occurrences of ruby and garnet and the rocks in which they are found. The paper provides an important early nineteenth-century record of gem and corundum localities in southern India and contributes to the historical documentation of the region’s mineral resources. Discusses the occurences of corundum and ruby in southern India, along with red and green garnets.