When I used to deal in selling of Gemstones and manytimes I came across people who had been cheated while purchasing Gemstones.

Most of the people did not have any knowledge of Gemstones and purchased them out of faith on seller.

This cource on Gemology in written by Barbara Smigel, PhD, GG. which I am putting on my web site.

The main aim of keeping this information on internet is to give knowledge to people on how to select their Gemstone.