National Geographic rock tumbler refill kit: 5 lb mixed rocks
Rock tumbler refill kit with 5 pounds of unpolished rocks and gemstones, plus 20 grit packets for multiple tumbling cycles. Includes gemstone, agate, Madagascar, and jasper mixes. Users note good quality and polishing, with some concerns about rock size and durability
Highlights
- five tumbling cycles worth of grit
- mixed rock types included
- ease of use with included instructions
Pros
- includes multiple rock mixes
- 20 grit packets for five tumbling cycles
- clear instructions and easy to use
- good polishing capabilities
Cons
- rocks may be small for some users
- durability concerns with crumbled stones
Best For
Features
- Contains 5 lb of unpolished rocks and gemstones: 2 lb gemstone mix, 1 lb agate mix, 1 lb Madagascar mix, 1 lb jasper mix
- Includes 20 rock tumbler grit packets for five complete tumbling cycles
- Includes five jewelry settings and a storage pouch for organizing specimens
