Synthetic, Imitation, and Treated Gemstones

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Butterworth-Heinemann, 1997 - Technology & Engineering - 203 pages
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The book describes a wide range of gem and ornamental materials, species by species, opening up the secrets they sometimes conceal. The book reveals when gemstones can be artificially manufactured, when they can be synthesized or cleverly imitated by other materials - like glass - and when their colour has been enhanced, permanently or for a short time, by the hand of man. Readers are told and shown what the tell-tale features are and learn that while nothing is quite what it seems there are ways in which they can spot give-away signs without needing to consult a laboratory.

The book is ideal for the jeweller, the auction house expert, the gemmologist and the mineralogist who will find a new slant on the materials that begin a somewhat less glamorous life as rough specimens.

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About the author (1997)

Michael O'Donoghue was among the original contributors to "National Lampoon" when it began in 1970. The original producer of "The National Lampoon Radio Hour," O'Donoghue hired Bill Murray, Chevy Chase, Anne Beatts, John Belushi, Christopher Guest and a number of other performers for the show and later on, brought them to "Saturday Night Live," where he served as head writer through the glory years of 1975-1978. As a screenwriter, O'Donoghue penned "Scrooged," "Mr. Mike's Mondo Video, Gilda Live!" And a number of other unproduced masterpieces. O'Donoghue died tragically of a cerebral hemorrhage in 1994 at the age of 52.

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