National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

Blue Marble Rock Tumbler Kit Reviews Summary

Ratings Breakdown

Rated 4.5 by 30,169 people

Pros from Reviews

  • Easy to use
  • Quiet operation
  • Great for beginners
  • Engaging for kids
  • Good customer service
  • Includes extra belt
  • Satisfying results
  • Affordable price

Cons from Reviews

  • Limited grit supply
  • Small amethyst pieces
  • Belt may wear out
  • Can leak if not secured
  • May vibrate on uneven surfaces

Notable Features

Durable Motor
Leakproof Barrel
Complete Kit
Easy to Use
Educational
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