John Sinkankas

A bibliography of North American ...

A bibliography of North American gemstone liteature

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Beryl

Year unknown

Emerald

Year unknown Gunther Grundmann, Rupert Hochleitner, Lore Kiefert, Karl Schmetzer, John Sinkankas, Jeff Scovil, and Roberto Appiani

Emerald and other beryls

Year unknown

Field Collecting Gemstones and Mi...

Field Collecting Gemstones and Minerals

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Gem cutting

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Gem cutting: a lapidary's manual

Gem cutting: a lapidary's manual

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Gem Cutting a Lapidarys Manual Edition

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Gemology

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Gemstone & mineral data book

Gemstone & mineral data book

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Gemstones and minerals

Gemstones and minerals

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Gemstones of North America

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Gemstones of North America. Colored Illus. and Line Drawings by the Author

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Gemstones of North America (v. 2: Gemstones of the world series)

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Gemstones of North America (V. 3: Gemstones of the World Series)

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Mineralogy

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Mineralogy for amateurs

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Mineralogy for Amateurs, Line Dra...

Mineralogy for Amateurs, Line Drawings and Diagrams By the Author

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Prospecting for gemstones and min...

Prospecting for gemstones and minerals

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Prospecting for Gemstones and Min...

Prospecting for Gemstones and Minerals

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Sinkankas' Standard catalog of ge...

Sinkankas' Standard catalog of gem values

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Van Nostrand's standard catalog of gems

Year unknown