Colour Gem Stone Identification & Testing
Gem ID course instructors may freely print and share the materials ... entirely by this author/researcher using results of magnetic testing on private gem collections. ... part of the identification process for all colored stones, as well as Diamonds.
The International Gemology Association (IGA), is an approached worldwide organization specifically formed to benefit the Gemological industry.It has a concept of world wide network to develop a common language for promotion and consistent standards necessary to improve international communication.IGA provides direct access to the source for Gemstones and related information.IGA has given our industry just such an environment and the Association has worked diligently to accomplish its objectives: