Science & Exploration

Discover the science of gems and precious minerals! In this collector's kit, budding gemologists will find 30 tumbled gems that sparkle and shine. ...

Imagine taking dull, ordinary rocks and magically transforming them into sparkling gems. Now you can with this professional-grade tumbling set fro...

This exclusive full-color book is just the right size for kids of all ages. Each book features engaging illustrations, photographs, and fun-to-lear...