On board pages. "Touch tactile features on every page!"--Back cover.
Summary:
"Are you curious about rocks and gems? What are the differences between rocks, minerals, and gems? Are there rocks in outer space? How many different kinds of gems exist? First Discovery Books explain rocks and gems to little ones."--Back cover.
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.