Samuels, S.K. (2014) Imperial Jade of Burma and Mutton-Fat Jade of India: Mining, Trade, and Use from Antiquity to the Present. SKS Enterprises, Inc., Tucson, AZ, USA, 248 pp. ISBN: 978-0-9725323-4-1

The Gübelin Foundation (2014) The Eduard Josef Gübelin Story: The Art and Science of Gems. London. Gübelin Group, Lucerne, and Unicorn Press, 306 pp., illus., hardcover, ISBN 978-1-91006-540-2

Gübelin, Eduard J. & Koivula, John I. (2005) Photoatlas of Inclusions in Gemstones, Volume 2. Opinio Publishers, Basel, Switzerland, 830 pp. ISBN 978-3855040957

Gübelin, Eduard J. & Koivula, John I. (2005) Photoatlas of Inclusions in Gemstones, Volume 3. Opinio Publishers, Basel, Switzerland, 672 pp. ISBN 3-03999-047-4

A discussion of the literature of ruby and sapphire (corundum), with particular emphasis on the most collectible books covering ruby and sapphire around the world.