Discover the common treatments and imitations plus gemstone properties, sources and typical cuts of stones, including a guide on appraisal techniques.Jewellers and designer goldsmiths, lapidaries and gem cutters, stone setters, gemologists, geologists, collectors and people who buy and sell jewellery at antique fairs and on the internet, this book is for anyone who has ever had a gemstone and wanted identification and information. Featuring a mix of gemstones and gem-set jewellery, it puts gems in context and contains historical context for those buying and selling antique and vintage gem-set jewellery, including details of the stones typically found in Georgian, Victorian and early 20th century settings.Packed with fascinating gemological details and up-to-date data on more than 70 of the most exquisite gemstones, and written by leading expert, Judith Crowe, learn the common pitfalls in identifying stones and clarify areas of confusion and misidentification.