252
people found this helpful, as of 2023
ranked #113,074 most helpful
out of 571,544,897 reviews
★☆☆☆☆
Not recommended
Because this product was offered by National Geographic, I trusted that the quality would be decent. The tumbler didn’t make it through even one cycle before breaking.
the product in question
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
4.5★ · 27,675 ratings, as of 2023