JTV.com's Learning Library is delighted to share with you this excerpt from the important article "Gemstone Enhancement: Dyeing and Bleaching" from Gems & Gemology, Vol. 46, No. 3.* Part Three of Four segments to be shared in the JTV.com Learning Library, this third excerpt explored the dyeing and bleaching of gemstones. Read Part Three in its entirety at jtv.com/library and to learn more about the treatments applied to the pearls shown in this fantastic image, and many others.
From: *Gemstone Enhancement and its Detection in the 2000s: Thermal Enhancement and Diffusion Treatment by Shane F. McClure, Robert E. Kane, and Nicholas Sturman, from GEMS & GEMOLOGY, Vol. 46, No. 3, pp. 218–240. © 2010 Gemological Institute of America, Fall 2010
Published on JTV.com: January 2012