Month: November 2010

Of Beryllium and Beefsteak

Posted on November 12, 2010 by John L. Emmett, PhD

Diffusion in gemology can be defined as a method of artificially coloring gemstones, not unlike the dyeing of cloth. Diffusion is actually a very common process that we meet in many different contexts. The dying of natural…

*Web Feature Free Articles

Direct to Pricing App

All pricing grids that appear in this publication or document are strictly prohibited from copying, reprinting, reproducing, printed or electronic distribution, posting on the internet, or used in any integrated way with any other publication or software without express written approval. All articles and photographs in our archives are copyrighted by the author, the contributing person or company, or Gemworld International, Inc. and may not be reproduced in any printed or electronic format, posted on the internet, or distributed in any way without written permission from Gemworld International, Inc. Abstracting of articles is permitted without prior approval when crediting the following at a minimum: Gemworld International, Inc., The GemGuide, Gem Market News, Volume#, Issue#, Date.