Curious adventurers will love transforming rocks into stunning gemstones using the National Geographic Explorer Series Rock Tumbler Starter Kit. This easy-to-use kit also includes jewelry fastenings to turn your creations into wearable accessories.

• Suitable for ages 9 years and up
• Tumbler starter kit helps you transform rough rocks into gemstones and jewelry
• Full-color learning guide details how rocks are naturally polished and includes facts about gemstones
• Includes:
  • High quality tumbler
  • Leak-proof tumbling barrel
  • 0.5 lb. of rough rocks
  • 4 bags of tumbling grit
  • 5 jewelry fastenings
  • Learning guide with instructions