Hamsa Damayanti; Raja Ravi Varma and Ravi Varma Press; Karla, Lonavala, Maharashtra, India; c. 1910; Chromolithograph; 50 x 35 cm. The Ganesh Shivaswamy Foundation, Bengaluru, and Google Arts & Culture

A chemical-based printing method for the production of coloured prints using stone or grained zinc surface plates and grease-based inks. It can incorporate as many as twelve colours and is considered to be of superior quality to the print reproductions of conventional lithographs.