Grain Boundary Diffusion in Tourmaline; The Epochal Crisis, Part II; A Tempest in a Tabloid:

An Open Letter to David Federman, Editor-in-chief, Colored Stone.By Richard W. Wise, G.G.©2009David Federman, I just finished reading Joel Arem’s article Ending Diffusion Confusion in the current issue of Colored Stone together with your editorial titled Some Badly Needed Science. You have written so many open letters to the gemstone industry I thought I would try my hand at writing one to you.