John Sinkankas

Sort by:

Popularity Prediction Title

... Unknown

Gemstones of North America

... Unknown

Emerald and Other Beryls

... Unknown

extraLapis English No. 2: Emeralds of the World

... Unknown

Field Collecting Gemstones and Minerals

... Unknown

Gem cutting: a lapidary's manual

... Unknown

Gemstone & Mineral Data Book

... Unknown

Gemstones of North America (v. 2: Gemstones of the …

... Unknown

Gemstones of North America (Volume 1)

... Unknown

... Unknown

Van Nostrand's standard catalog of gems