Maggie Campbell Pedersen is a Fellow of the Gemmological Association of Great Britain, and an Associate of the British Institute of Professional Photography. For many years she has specialised in organic gem materials - that is, those of plant or animal origin - where her work includes identification, teaching, writing and research. She has given lectures and seminars world-wide and is a regular contributor to gemmological publications. Thanks to her interest in conservation she has also spent time as a research assistant in various parts of the world, working with endangered species such as elephants and marine turtles, from which ivory and tortoiseshell were derived.
Tortoiseshell, derived from marine turtles, has been used in decorative work for thousands of years. It featured in trade with, amongst others, the Babylonians and the Romans. In Europe it was used for furniture veneer in the seventeenth century, while in Polynesia it was used...
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