1. Gemmology;Read,2005
2. Gemmological Instruments: Their Use and Principles of Operation;Read,2013
3. Mystical stones in oncology: crystal healing power or perfect nonsense?;Micke;Trace Elem. Electrolytes,2010
4. Applied Mineralogy Applications in Industry and Environment;Mukherjee,2012
5. Gem Identification Made Easy: A Hands-on Guide to More Confident Buying and Selling;Matlins,1997