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Amazon.com: EISCO Rock Cycle Kit, 12 Pieces - Includes Metamorphic, Igneous & Sedimentary Rocks - 1" Specimens - Fun Geology Activity for Exploring The Rock Cycle & Rock Types - Tech Cut
Dan&Darci Mega Rock Collection for Kids - Includes 250+ Bulk Rocks, Gemstones & Crystals Plus Genuine Fossils and Minerals
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