The Complete Handbook for Gemstone Weight Estimation
by G.G. Charles I. Carmona
Gemania Pub; Published: 1998-12-01; Paperback; Book
Best price: $46.40
Price in other shops: $59.95

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Ruby & Sapphire
by Richard W. Hughes
R W H Publishing; Published: 1997-12; Hardcover; Book
Price in other shops: $98.00

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Precious Stones, Vol. 2
by Max Bauer
Dover Publications; Published: 1968-04-01; Paperback; Book
Best price: $3.95
Price in other shops: $14.95

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Precious Stones: A Popular Account of Their Characters, Occurrence and Applications, With an Introduction to Their Determinants, for Mineralogists
by Max Hermann Bauer
Charles E. Tuttle Company, Publishers; Published: 1969-06; Hardcover; Book
Best price: $35.00
Price in other shops: $52.50

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Manual of Mineralogy (after James D. Dana), 21st Edition, Revised
by Cornelis Klein, Cornelius S. Hurlbut, James Dwight Dana
John Wiley & Sons Inc; Published: 1998-07-27; Hardcover; Book
Best price: $197.82

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Gemstone Enhancement: History, Science and State of the Art
by Kurt Nassau
Butterworth-Heinemann; Published: 1994-07; Paperback; Book
Price in other shops: $64.95

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Gems Made by Man
by Kurt Nassau
Gemological Inst of Amer; Published: 1980-12; Hardcover; Book
Price in other shops: $25.00

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Emerald and Other Beryls
by John Sinkankas
Chilton Book Company; Published: 1981; Hardcover; Book

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Gemology: An Annotated Bibliography
by John Sinkankas
Scarecrow Press; Published: 1993-06-28; Hardcover; Book
Best price: $149.98
Price in other shops: $208.00

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Gemstone & mineral data book;: A compilation of data, recipes, formulas, and instructions for the mineralogist, gemologist, lapidary, jeweler, craftsman, and collector
by John Sinkankas
Collier Books; Published: 1974; Unknown Binding; Book
Best price: $20.00