A Field Guide To Australian Opals

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'Australian Opals are the most beautiful and sought-after multicoloured gemstones in the world, because of all the known previous stones only an opal can show the complete range of spectral hues in glorious balance... the text clarifies in understandable terms the many mineralogical, gemmological, and commercial complexities of the opal gemstone and explains the scientific factors involved in opal formation; and traces the history of the Australian opal industry. Some wear to DJ, including tear on front. Some shelf wear to edge of green boards, and marking to endpapers and discoluration/foxing to page edges throughout. Text is a good clean copy, and features colour photography throughout.

9.99 GBP