Featuring a New Introduction by John Higgs! âCosmic Trigger deals with a process of deliberately induced brain change. This process is called âinitiationâ or âvision questâ in many traditional societies and can loosely be considered some dangerous variety of self-psychotherapy in modern terminology.
The tools used by gemologists for the identification and grading of different gemstones range from the simple and familiar to the high-tech and exotic.Most gemstones can be identified by a few basic tools that every gemologist should have at hand.nother required tool for gemologists is the refractometer. A small drop of liquid with a high refractive index (RI) is placed on a glass cylinder in the top of the refractometer and illuminated from a separate light source (sometimes white light, but a monochromatic light source provides better accuracy).
Gemval provides you web tools for gemstone appraisal, whereby most natural gemstones can be valued using our interactive model. To arrive at the value our statistical model takes into account the many factors contributing to gem's value.