An Ocean of Gems is dedicated to Dr Dhanesh Jain (1939-2019), distinguished scholar of Indian sociolinguistics and founder of Ratna Sagar, parent company of Primus Books. He was also a dedicated academic and co-editor, with George Cardona, of The Indo-Aryan Languages, a seminal reference work on the subject. As a publisher, Dhanesh Jain was an inspiration to authors and readers, tirelessly advocating and pragmatically supporting the Indian academic publishing industry with highcalibre academic reference books and Indological scholarship. As a scholar and reviewer for major presses, he recognized the urgent need for such a publishing enterprise in the humanities and social sciences, particularly in the discipline of South Asian languages. To this day, Primus Books provides a viable alternative publishing platform to academics globally.