25 cool facts about rocks and gems -- Rocking out! -- A rocky planet -- Digging in -- 25 more facts about rocks and gems -- Rocks and gems facts roundups.
Summary:
"100 fun facts about rocks, minerals, gems, and all things shiny"-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.