Gemstones of the World
Walter Schumann
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Finding Gold in Colorado: The...
Laura a Hoeppner (Photographer),
Kevin A Singel
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Rocks & Minerals of...
Dan R Lynch,
Bob Lynch
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The Smithsonian National Gem...
Dr. Jeffrey Edward Post
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Gemstones: A Concise...
Robin Hansen
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Rocks and Minerals
Chris Pellant
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Geodes: Nature's Treasures
Brad L Cross
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Rocks, Gems and Minerals: A...
Paul R Shaffer,
Herbert S Zim
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Agates: Treasures of the Earth
Roger Pabian
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The Firefly Guide to Minerals...
Rupert Hochleitner
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Dig and Discover Geodes
Nancy Dickmann
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Southeast Treasure Hunter's...
Kathy J. Rygle
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Granites: Petrology,...
Anne N?d?lec,
Jean-Luc Bouchez
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Minerals of Georgia: Their...
Jose Santamaria (Editor),
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The Mineral Book
McQueen David
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Mineralogy
Dexter Perkins
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Gem: The Definitive Visual...
DK,
Aja Raden (Foreword by)
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Rocks and Minerals of...
Vinson Brown,
Professor David Allan
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Earth Materials: Introduction...
Cornelis Klein,
Anthony R Philpotts
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An introduction to the rock...
W. A. Deer
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General Science 1 (Teacher...
Kristin Pratt
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Finding Gold in Colorado:...
Laura a Hoeppner (Photographer),
Kevin Singel
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Gem Trails of Arizona
Adrian Mitchell,
James R Mitchell
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Gem Trails of New Mexico
James R Mitchell
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