Maggie Campbell Pedersen has over thirty years experience in photography, specialising for the past twenty years in gemstones and jewellery. She has spent eight years working in gemmological research, specialising in gem materials of plant and animal origin, and teaching in this subject.
"'Chock full of interesting facts... A comprehensive and clearly written guide to organic materials... a volume of genuine use to dealers, collectors and museum curators.' Antiques and Collectables 'This book is the most comprehensive, in-depth, and scientific examination of these materials to date.' Gems and Gemmology 'I have not found a reference book that has more data on this subject... it is a mandatory item for every appraiser's reference library.' The Jewelry Appraiser"
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