Gems, (6^th Ed.)

Since it was first published in 1962 'Gems' has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language. In this sixth edition, edited by Michael O'Donoghue, the forty chapters, appendices and tables have been revised to optimize the books relevance to today's practice and to include an expanded encyclopedic section, providing listings of all gem material for ease of reference. Relevant to the professional jeweller and student gemmologist, 'Gems' also caters for the collector of gems and the layperson who is interested in precious stones.

Origin of recovery of gemstones, Diamond, Ruby and sappire, Emerald, aquamarine and other beryls, Chryoberyl and spinel, Topac and tourmaline, Zircon, perdot and spodumene, The garnets, Moonstone and other feldspare gemstones, Silica group, Opal, Turquoise and lapis-lazuli, The jades, Natural glasses, Lesser known ornamental and gem materials, Synthetic gemsontes, Gemstone simulants, Composite gemstones, Fashioning of gemstones, Pearls, Coral, shell and operculum, Hardness, cleavage and fracture, Specific gravity, Light and optical effects, Coloru and colour enhancement, Refractive index, reflectance and thermal conductance, Inclusions, Luminescence, Electrical and magnetic phenomena, Chemistry of gemstones, Appendices, Identification tables.

Gemmologists, student and professional. Jewllers, gemstone dealers, decorative art professionals, collectors.

Reviews of the previous editions:'Any serious gemmologist should have a copy available for ready reference.'Gems and Gemmology'...a truly magnificent book.'New World'...this quintessential textbook and reference will serve yet another generation of students of gemmology.'The Australian Gemmologist