Price: $74.99 - $52.49
(as of Dec 03, 2025 14:27:42 UTC – Details)
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Every purchase helps support the global nonprofit National Geographic Society in its work to protect and illuminate our world through exploration, research, and education.
CREATE YOUR OWN GEMSTONES – Rock tumbling is a hugely popular hobby for kids and adults! This professional rock tumbler makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
A TUMBLER THAT’S MADE TO LAST – The durable motor has time and speed control settings so you can set it and forget it. An improved leak-proof, 2 lb. barrel features a stainless-steel lid and is 75% quieter overall than plastic tumbler barrels.
INCLUDES 1 LB. OF ROCKS & MORE – This tumbling kit comes with everything you need: 1 lb. of raw rocks with 9 types of gemstones, 5 jewelry fastenings, grit, strainer & GemFoam for a dazzling shine!
USE GEMFOAM FOR DAZZLING RESULTS – This rock tumbler kit stands apart from others thanks to our new, reusable GemFoam rock polisher! Add GemFoam and water to the barrel after your final tumbling stage and your gems will have incredible shine!
AWARD-WINNING PRODUCTS – Blue Marble, winner of the Toy Association’s prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
Customers say
Customers find the rock tumbler to be of good quality and very simple to use. The functionality and noise level receive mixed feedback – while some report amazing results and low noise levels, others mention it stops working and find it noisy. Durability is a significant concern, with multiple customers reporting it breaking after 60 days or during the first phase of tumbling. Value for money opinions are divided, with some considering it worth the price while others say it’s not worth the investment.
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