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- FOUR GRADES OF GRIT - Coarse, medium, fine, polish. Transform your stones from rough rocks to dazzling gemstones!
- JEWELRY FASTENINGS - 1 necklace, 1 set of earrings, 1 keychain, 1 ring. Create custom jewelry from your newly polished gemstones!
- DETAILED LEARNING GUIDE - Our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts.
- AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
