Gemstone enhancement : history, science, and state of the art
Provides a complete coverage to the tremendous range of treatments available to enhance the colour and appearance of gemstones. This includes various types of irradiation and heat treatments, colourless impregnations, bleaching, dyeing, diffusion and other processes.
xii, 252 pages : illustrations ; 24 cm
9780750617970, 0750617977
28889342
1. Introduction
2. The history of treatments
3. Heat treatments
4. Irradiation treatments
5. Treatments other than heating and irradiation
6. The identification of treated gems and the question of disclosure
7. Specific gemstone treatments
Appendix A: More on heating
Appendix B: More on irradiation
Appendix C: Color
Appendix D: Purveyors of supplies and services