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A collection of the rocks that contribute to the bas..
A study unit of 50 rocks and minerals designed speci..
This collection gives students a complete unit for t..
Ideal for growing single-crystal clusters (each abou..
Learn about rocks and the minerals that form them. D..
Grow 13 exciting, sparkling crystal specimens made u..
A basic, introductory unit of 75 rocks and minerals ..
Contains gemstones, rocks, and minerals found in wes..
This collection of 9 minerals represents the scale o..
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Igneous Rock Specimens in packs of 10 range in size ..
The 15 rocks in this group are representative of the..
Students learn to identify 15 common minerals by obs..
A great kit for studying the basic rock types. Inclu..
Contains 15 specimens from the igneous, metamorphic,..
A graphic representation of how the major families o..