Untracht, Oppi, Traditional Jewelry of India, Abrams NY 1997 

(By far the most useful)

Birdwood, George C. M., The Industrial Arts of India, London 1880

Gabriel, Hannelore, The Jewelry of Nepal, Weatherhill, New York & Tokyo 1999

Mehta, Rustam J.The Handicrafts and Industrial Arts of India, Bombay, 1960

Nandagopal, Choodamani and Vatsala Iyengar, Temple Treasures: Temple Jewelry,Crafts council of Bangalore,

1997

Chandra, Dr. Rai Govind, Studies in the Development of Ornaments and Jewelry in Proto-Historic India, Chowkhamba Sanskrit series, Varanasi, 1964

Brunel, Francis, Jewelry of India, Munshiram Manoharlal Publishers Pvt. Ltd., No place?, No date?

Jayakar, Pupul and John Irwin, Textiles and Ornaments of India, New York. 1956

Oppi Untracht's work is the most useful trom a technical standpoint