[1] Callister W.D.Jr.: “Fundamentals of Materials Science and Engineering: An Integrated Approach”, 2nd Edition, John Wiley & Sons, Inc., ISBN 0-471-47014-7, USA, 2005, p. 219
[2] Funk and Wagnalls: “Encyclopedia”, 1973, Library of Congress Catalog Card Number 72-170933, USA, Volume 7, p. 462.
[3] Snell F.D. and Ettre L.S.: “Encyclopedia of Industrial Chemical Analysis”, Volume 11, John Willey and Sons Inc., Catalogue Card Number 65-27477, USA, pp.462 to 474.
[4] Collins A.T.: “Improving the Colour of Gem-Quality Diamonds by High Pressure, High Temperature Annealing”, Materials Today, Elsevier, ISSN: 1396-7021, Vol.3 Issue 3, 2000, pp. 3 to 6.
[5] National Geographic, “Diamonds, The Real Story”, Vol. 201. No. 3, March 2002
[6] Lazare Diamonds The Ideal Cut, Larry Jewelry, Singapore, Paragon Ngee Ann CityTower Raffles City Shopping Centre, tel: (65) 732 3222, or 235 5848, or 336 9648