Since 2005 offers links to websites related to biochemistry, reliability engineering, chemist, morality, medical physics, mechanical engineering, earth sciences, materials, astrophysics, nuclear, software, molecular and much more.
offers programs in gemology.
GIA's mission is to ensure the public trust by educating and serving the gem and jewelry industry worldwide.
information resource with shopping tips, the latest market news, and Gem-o-Rama.
dedicated to bringing quality information and educational services to everyone interested in gemstones.