• AGATES FROM AROUND THE WORLD - 1 lb. of rough agate rocks are sourced from around the world. Colors and sizes will vary between refill kits.
  • FOUR GRADES OF GRIT - Coarse, Medium, Fine, Polish. Transform your raw stones from rough rocks to dazzling gemstones! This refill kit also works with all rock tumblers.
  • JEWELRY FASTENINGS - Additional rock tumbler accessories include 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring. Create custom jewelry from your newly polished gemstones!
  • LEARNING GUIDE - Our detailed learning guide will teach you all about agates and includes many amazing and fascinating facts
  • RESPECTED QUALITY - National Geographic is proud to provide only the highest quality STEM toys and all our kits are backed by our 100% satisfaction guarantee
  • AGATES FROM AROUND THE WORLD - 1 lb. of rough agate rocks are sourced from around the world. Colors and sizes will vary between refill kits.
  • FOUR GRADES OF GRIT - Coarse, Medium, Fine, Polish. Transform your raw stones from rough rocks to dazzling gemstones! This refill kit also works with all rock tumblers.
  • JEWELRY FASTENINGS - Additional rock tumbler accessories include 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring. Create custom jewelry from your newly polished gemstones!
  • LEARNING GUIDE - Our detailed learning guide will teach you all about agates and includes many amazing and fascinating facts
  • RESPECTED QUALITY - National Geographic is proud to provide only the highest quality STEM toys and all our kits are backed by our 100% satisfaction guarantee