Joanna Hardy is an independent gemologist and jewelry specialist, formerly of Debeers and Sothebys. She lectures widely and writes for many international journals, and also features on the popular BBC programme Antiques Roadshow. She is the principal author of Emerald and Ruby, also published by Thames & Hudson. Robert Violette is an artist, editor and publisher based in London.
The perfect book for jewelry lovers... Will present something new to even the most seasoned colored gemstone aficionado.-- National Jeweler