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Spectroscope and Gemmology

The Spectroscope and Gemmology


Basil Anderson & James Payne
Edited by R. Keith Mitchell, F.G.A.

6 x 9, 288 pp, 75+ b/w illustrations, Quality Paperback , 978-0-943763-52-1

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The first book devoted exclusively to the spectroscope
and its use in gemstone identification.
Until 1933 the refractometer and the microscope were the two principal tools in gem testing. Then B.W. Anderson introduced the hand spectroscope which quickly became the third vital instrument for the UK gemmologist. The publication of Anderson’s papers in the mid-1950s alerted gem laboratories worldwide to the importance of this instrument. Today its use is universal.
Anderson and his lifelong colleague, Payne, both of the world’s first full-time gemmological laboratory, were the pioneers in recognizing the vast potential of the spectroscope for this purpose, and The Spectroscope and Gemmology, as the extensively edited, updated and enlarged version of Anderson’s original papers, provides a vital textbook wherever gemmology is used or taught. The distinguished gemmologist R. Keith Mitchell has undertaken the editing and has added chapters on the Pye spectrophotometer and on lasers. He has also reproduced new line drawings of spectra in three aspects to accommodate the prism instrument in both the British version and in that favoured by American gemmologists, and in another version as seen through the diffraction grating instrument.
Written for gemmologists everywhere and incorporating the latest developments this book will prove indispensable to all engaged in gemstone identification.
Contents include:
The History and Development of Spectroscopy
‘The Celebrated Phaenomena of Colours’ • The Yellow Lines of Sodium • The Absorption Spectra of Solids • Other Uses of the Spectroscope • Emission Spectra • The Quartz Spectrograph • The Spectrophotometer
Absorption of Gem Minerals
Absorption Spectra • Light Sources – The Causes of Colour • Absorption and Fluorescence Spectrum of Ruby • Absorption and Fluorescence Spectrum of Red Spinel • Absorption Spectra of Pyrope and Topaz • Absorption Spectrum of Emerald • Absorption Spectrum of Alexandrite • Absorption Spectrum of Jadeite • Absorption Spectrum of Demantoid Garnet • Other Chromium Spectra • Absorption Spectrum of Almandine Garnet • Absorption Spectrum of Blue Spinel • Absorption Spectra of Peridot and Sinhalite • Absorption Spectra of Enstatite and Diopside • Absorption Spectra of Kornerupine and Axinite • Absorption Spectra of Green Tourmaline and Iolite • Absorption Spectra of Idocrase, Actinolite and Serpentine • Absorption Spectra of Sapphire and Chrysoberyl • Absorption Spectra of Aquamarine and Orthoclase: Spodumene and Jadeite • Absorption Spectra of Andradite and Epidote • Absorption Spectra Due to Manganese • Absorption Spectra Due to Cobalt and Vanadium • Absorption Spectra Due to Copper: The Spectrum of Turquoise • Absorption Spectra of Zircon • The Rare Earth Elements • Absorption Spectra of Diamond • Miscellaneous Spectra • Absorption in Synthetic Gemstones • Absorption Spectra of Glasses • Fluorescence Spectra • Summary of Absorption Spectra
References and Notes
About the editor
R. Keith Mitchell, FGA, Tully Medallist and a vice-president of the Gemmological Association, was instructor to the G.A. courses for more than twenty years, and the author of many papers on gemmology.
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