The 8 Best Vibrating Rock Tumblers in 2023

❤ 【THE EXCLUSIVE 1.5LB BARREL 】- Market research shows 1lb barrels are not big enough to handle enough gemstones and 2lb barrels are too big to well-polish each stone. Many rock-polish lovers are searching for the 1.5lb barrel

❤ 【DAZZLING RESULTS WITH TPE PLASTIC PARTICLES】 - Thanks to our unique, reusable TPE plastic particle rock polisher, this rock tumbler for Adults is unlike any other! After your first tumbling cycle is over, add the TPE pellets to the barrel for cycle 2. You will get an incredible luster gem later.

❤ 【 FOUR-STAGE PREMIUM ROCK GRIT】 - In each polishing stage, we provide different grit to make the results even better. Just when you do not think the stones can be any smoother, the grit will magically do the trick to make them smoother. With different particle sizes (powder thickness 220/500/1200/5000), we are able to reduce polishing time 168 hours compare to other brands.

❤ 【A TUMBLER THAT'S MADE TO LAST 】– We use industrial high standard materials to build the rock tumblers. It has a durable motor that survives 5000 cycles. The special rubber that we add to the barrel just makes it both elastic and firm.

❤ 【ALL-IN-ONE ROCK TUMBLER FOR KIDS KIT 】- Owning this kit means you do not need to worry about any materials that might get for the tumbling process to be completed. It has a redesigned tumbler , four polishing grits,a sifter ,a barrel brush ，even rough stones with the same hardness, and a detailed full-color user manual. （It is a great gift with an educational meaning for all kids.）

90-Day refund guarantee & 2-Year free replacement, please feel free to reach out us for any issue. We are always here, rain or shine.

START A TUMBLING JOURNEY -- Koolstone Rock Tumbler turn rough rocks into polished gems, then you will be very excited to see the stones change with each cycle. That's a fun process of rock tumbling and a family little project for parent-child endeavor.

2.5LB LARGE CAPACITY & 75% QUIETER -- An updated features is that KoolStone Rock Tumbler has a large 2.5LB capacity. Which allows to tumbler more rocks each time. Another improvement is the quieter barrel. Rubber material which has 75% quieter than most plastic barrel.

FASTER POLISHING TIME & BETTER POLISHING RESULTS -- 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.

EVERYTHING YOU NEED FOR TUMBLING IS HERE -- KoolStone Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 3 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. Just tumbling right away!

90 DAYS REFUND GUARANTEE & 2 YEARS FREE REPLACEMENT -- The stardard 30-day return time is always short, so we purposely extend it to 90 days. If you miss Amazon's 30-day return window, please do not get angry or mat at us and feel free to contact us directly for an easy refund or replacement within 48 hours.

Turn rough rocks into polished gems: Discover and learn the fun process of rock tumbling with the Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job!

Complete kit: Includes: rock tumbler machine, low-noise barrel (1 lb. capacity), 4 grit packets, 1/2 lb. assorted rough rocks, mesh strainer, jewelry fasteners, gem storage bag, and an illustrated easy-to-follow instruction and learning guide booklet.

Powerful quality: Runs on a powerful heavy duty motor that will last for a very long time, and includes a leak-resistant barrel that runs quieter than the other brands.

Advanced features: Includes speed controls (providing more granular tumbling results), a 9-day timer (shuts off automatically when you desire), all displayed on beautiful LCD screens.

A fun and educational gift for all ages: It's not often that a science project can be fun and engaging, but this kit achieves both! It fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age. It fosters a love for science, geology and mineralogy in a fun and exciting way.

3LB Large-capacity Rubber Barrel-The improved double leak-proof closure barrel features a large 3LB large-capacity and an updated stainless-steel lid and reinforced cover. It’s also 75% quieter than most plastic barrels, thanks to a layer of tire rubber that absorbs sound.

Advanced Features-3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear LCD screens, letting you easily hone your settings for precise tumbling every time.

24 days Entire Cycle-After thousands of tests in different density grip on all polishing cycles, we have configured the most effective polishing grip for each cycle through rigorous testing to create dazzling polishing results within 24 days (The entire cycle is 7 days shorter than other machines.)

TPE Plastic Particles for Dazzling Results-This rock polisher kit stands apart from others thanks to our exclusive reusable TPE plastic particles. Adding them on cycles 2-4 to reduce rock breakage for incredible shine.

All-in-one Rock Tumbler Kit-This complete kit has everything you need to create polished gemstones. Rock tumbler, four polishing grits, 1lb quality rough stone (tiger eye and jasper), reusable TPE plastic particles,Extra durabe belt, power cord, screwdriver, filter mesh bag, educational user manual. Discover and learn the fun process of rock tumbling with this professional rock tumbler.If your experience is anything less than extraordinary, let us know so we can make it right for you.

2-Year Warranty for Free Exchange and Replacement. For any issues or if you have missed Amazon's 30-day return window, please reach out via our customer service email: [email protected] for refund or replacement.

【POLISH YOUR OWN GEMSTONES】Komestone tumbler kit makes tumbling even easier in an interesting way to turn any rough stones and polish them into super shinning and wonderful gemstones.

【THE ONLY TUMBLER YOU NEED】Built in with the super high quality motor and thicken tier level rubber barrel, both are super durable for lasting for years, three protections for water leakage is an extra big plus for years of use.

【ALL IN ONE HOBBY & EDUCATIONAL TUMBLING KIT】Our KomeStone rock tumbler kit has everything that need for tumbling, including 1LB for 9 types of real rough gemstone rocks, the tumbler and the barrel, 3 belts and 4 polishing grits and ceramic contact media, sifter, screwdriver, Jewelry Fastenings, and illustrated tutorial guide. It's is a very decent and perfect gift for both children and adults!

【TUTORIAL GUIDE FROM BEGINNERS TO EXPERTS】Make tumbling easy! We created this Instruction & Learning Guide with full-color contents for both beginners and experts.

【2 YEAR WARRANTY IS A BIG PLUS】: 100% Risk-Free Ppurchase + Local Phone Service. The tumbler base or the barrel is protected by 2-Year Warranty for free exchange against manufacturing defects. Please kindly contact us via KomeStone customer service email ([email protected]) for free replacement if belts get broken or any parts missing for this kit, and the replacement will be sent out in 12 hours. For any issues, please be patient, we promise to solve all problems. Your 100% satisfaction is our goal.

CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock tumbler kit 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 – Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. An excellent STEM activity for kids.

A COMPLETE HOBBY TUMBLING KIT - Everything you need to create polished gemstones: the tumbler, four polishing grits, sifter, nine types of real rough gemstones, plus a detailed full-color learning guide. Makes a great gift for girls and boys!

EASY TO USE – Simple instructions and one-touch settings make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, set it and forget it! This is a great gift for kids.

HIGH-QUALITY EDUCATIONAL TOYS - National Geographic is proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service.

CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This robust rock polisher 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 barrel features a stainless-steel lid.

ALL-IN-ONE TUMBLING KIT - You get 1/2 pound of rough rocks with nine different types of gemstones inside, five jewelry fastenings, tumbler grit, a strainer, and our innovative GemFoam polishing foam.

USE GEMFOAM FOR DAZZLING RESULTS - This rock tumbling 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!

HIGH-QUALITY EDUCATIONAL TOYS - National Geographic is proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service.

CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock polisher kit 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 – Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. Makes an excellent STEM gift or activity for girls and boys.

ALL-IN-ONE TUMBLING KIT - This complete kit has everything you need to create polished gemstones. In addition to the tumbler, four polishing grits, sifter, and rough gemstones, this bundle includes refill packs with 1lb each of rough gemstones and rough jasper. Learn all about the gemstones in your kit with the detailed, full-color learning guide.

EASY TO USE – Simple instructions and one-touch settings make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, so you can set it and forget it. This is a great gift for kids!

SATISFACTION GUARANTEED – The National Geographic STEM series provides kids high-quality educational toys that are a whole lot of fun! If your experience is anything less than extraordinary, let us know so we can make it right for you.