10 Best Rock Tumblers
#1

KomeStone K1 Pro Cutting-Edge Brushless Motor Advanced Rock Tumbler Polisher Kit , Extra Large 2.5 Lb.Barrel with 3-Speed Motor 9-Day Timer, Includes 3 Belts, Rough Gemstones, 4 Polishing Grits etc.
Brand: KomeStone
$216.69
⭐ 4.4
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- Contact us for extra belts at no cost, belts may get break for working day and night, just get more for spare use. Reach out to us via customer service email: support@komestone.com.
- 2-Year 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: support@komestone.com for help. THIS IS THE BRAND & SELLER COMMITMENT.
- YOUR LAST ROCK TUMBLER : This is the first and only rock tumbler that built in with the cutting-edge brushless motor, providing this advanced rock tumbler with more than 20,000 hours work and service life, and with the thicken tier level rubber barrel, which is also super durable for lasting for years, as well as three protections for water leakage is an extra big plus for years of use. So this is a professional rock tumbler of rough service.
- POLISH YOUR OWN GEMSTONES : Komestone tumbler kit makes tumbling even easier in an interesting way,it works for getting rouhgh and raw rocks smooth enough to use for jewlery, craft, collection, etc,. At last rough rocks will be turned out pretty gemstones with high quality and enough amount grits. Skill comes from practice.
- 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!.
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#2

Blue Marble National Geographic Rock Tumbler Refill Kit - 2.26 kg Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill & Unpolished Rocks
Brand: Blue Marble
$59.99
⭐ 4.8
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- ENORMOUS VARIETY - This rock tumbler refill kit has 2268 grams of unpolished rocks and gemstones consisting of a 906 g gemstone mix, 453 g agate mix, 453 g Madagascar mix, and 453 g jasper mix.
- ROCK POLISHING GRIT There are 20 total rock tumbler grit packets in the kit, enough for five complete tumbling cycles with any rock tumbler.
- JEWELLERY SETTINGS Once your rocks are polished, use the 5 included jewellery settings to create beautiful keepsakes or use the included storage pouch to keep your favourite specimens all in one place.
- DETAILED LEARNING GUIDE The Learning Guide includes polishing instructions along with fascinating information about the stones in the kit.
- HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!
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#3

VEVOR Rock Tumbler Kit, 2.5 lbs Rock Polishing Kit, 9 Speed Settings 9-Day Polishing Timer Stone Kit, Rock Polisher with Rough Gemstones Grits, for Kids Adults
Brand: VEVOR
$99.99
⭐ 4.7
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- Belt-Free Direct-Drive Motor: No more worries about broken belts! The direct-drive motor delivers efficient power with 35dB silent operation. The rock tumbler kit runs cool even after extended use, ensuring a longer lifespan for endless rock-tumbling fun.
- Upgraded 9-Speed Control: This rock polishing kit features an easy-to-use operating panel, allowing you to choose from 1-9 speeds and 1-9 day timer. Whether you're an 8-year-old beginner or a rock collection enthusiast, you'll enjoy effortlessly polishing gemstones to create crafts comparable to those of a master.
- Includes Rare Rough Stones: Let your imagination run wild and create your own stone art! Our stone polishing kit comes with a 180g bag of rough stones, along with 4-stage grit and jewelry fasteners. It's ready to use right out of the boxno need to hunt for stones.
- Smart Safety Design: The stone tumbler features an upgraded curved lid design for easy and hand-secure twisting. The high-seal chamber prevents water leakage and keeps your workspace clean. It also features a grooved handle for easy lifting and anti-slip pads to keep the machine stable during powerful operation.
- Perfect for Parent-Child Bonding: The rock polisher is a fun and educational high-quality toy that boosts creativity and imagination. It includes a detailed user manual and a built-in power-off memory featureno need to worry about power interruptions. Once power is restored, it resumes exactly where it left off, delivering a polished, efficient finish every time.
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#4

National Geographic Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults
Brand: Blue Marble
$317.60
⭐ 4.8
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- PROFESSIONAL TUMBLING - The Ultimate Tumbler delivers spectacular results with unparalleled ease of use! With its large 2-pound barrel, 3 selectable speeds; and timer with settings for days and hours.
- QUIETEST TUMBLER - The Ultimate Rock Tumbler's all-new design includes a sound-dampening cover that makes tumbling quieter than ever, perfect for enthusiasts who tumble indoors, or in smaller or shared spaces.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need to get started, including 1 pound of rough rocks, 4 bags of grit, 5 jewelry fastenings, a newly designed strainer, and our exclusive GemFoam rock polisher for a brilliant finish!
- USE GEMFOAM FOR DAZZLING RESULTS - Your tumbled rocks will have an incredible shine thanks to our reusable GemFoam rock polisher. Just add GemFoam and water to the barrel after your final tumbling stage for a brilliant finish!
- HIGH-QUALITY EDUCATIONAL TOYS - We proudly make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience isn't stellar, we'll make it right!
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#5

YOPOWER Rock Tumbler Polisher Kit with 9-Speed Adjustable Control & 9-Day Countdown Timer, Quiet Electric Rock Polisher for Kids STEM Education
Brand: YOPOWER
$69.99
⭐ 4.6
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- 9-Speed & 9-Day TimerThe rock tumbler polisher kit fully customise each polishing stage with nine speed levels and a programmable 9-day auto shut-off, displayed on a clear digital timer.
- Quiet OperationPremium motor and leak-proof barrel design reduce noise by up to 75 % compared to standard plastic drums, The rock tumbler is ideal for home study or classroom use.
- Safe DesignThe electric gemstone grinding machine is supplied with a 12 V 1 A adapter for reliable, kid-friendly power; anti-skid pads ensure stable, slip-free operation during long polishing runs.
- Perfect STEM Educational KitEngages children in hands-on geologycultivating patience, scientific curiosity and fine-motor skills as rough stones transform into gleaming gems.
- Complete Rock Tumbler Polisher KitEverything you need is included: professional barrel with secure lids, adapter, user guideideal for beginners, hobbyists and classroom projects.
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#6

NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit - Complete Rock Polisher Kit, Durable Leak-Proof Tumbler, 227 Grams of Rocks, Grit, 5 Jewellery Fastenings
Brand: Blue Marble
$69.99
⭐ 4.2
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- CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby! This starter 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 allows you to tumble multiple batches of rocks. An improved, leak-proof barrel is lined with rubber for quieter operation while tumbling on the sturdy tumbler base.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get 227 g of rough rocks with 9 different types of gemstones inside, 5 jewellery fastenings, and our 4-stage rock polishing grit.
- EASY TO USE AND EDUCATIONAL - Detailed tumbler instructions lead you step-by-step through the rock tumbling process, a full-colour learning guide details how rocks are naturally polished and has fascinating facts about the gemstones in the kit.
- SATISFACTION GUARANTEED National Geographic provides high-quality educational activities 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.
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#7

Blue Marble National Geographic Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Durable Noise-Reduced Barrel, Rocks, Grit & New GemFoam for a Shiny Finish, Cool Toys, Great STEM Hobby Kit
Brand: Blue Marble
$110.00
⭐ 4.2
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- CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This robust 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 tumbling time control settings so you can set it and forget it. The leak-proof barrel features a stainless-steel lid and is 75% quieter overall than plastic tumbler barrels.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get 227 grams of rough rocks with nine different types of gemstones inside, five jewelry fastenings, tumbler grit, a strainer, and our innovative new GemFoam rock polisher.
- 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!
- HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!
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#8

Professional Rock Tumbler Kit- Advanced Features Include Shutoff Timer and Speed Control - 2.5lb Barrel Capacity, 4 Polishing Grits, Mesh Stainer, Jewelry Fastenings
Brand: HOVEROO
No Price
⭐ 5
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- 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 barrel features a stainless-steel lid is 75% quieter overall than plastic tumbler barrels.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get 2.5 kilograms of rough rocks with nine different types of gemstones inside, five jewelry fastenings, tumbler grit, ceramic filler media and a strainer.
- 4-Stage Professional Grit: Our tumbler includes a complete 4-stage silicon carbide grit system precisely calibrated for optimal results. Starting with 60/90 grit for initial shaping, progressing to 120/220 for smoothing, then 500/600 for pre-polish, and finishing with 1200-grade polish compoundthis professional sequence transforms rough stones into jewelry-grade gems with exceptional clarity.
- SATISFACTION GUARANTEED The HOVEROO Professional Electric Rock Tumbler Kit 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.
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#9

NATIONAL GEOGRAPHIC Rock Tumbler Kit - 1.36 kg Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, includes Rocks for Tumbling and Rock Polisher Grit, Science Kit for Adults and Kids
Brand: Blue Marble
$159.99
⭐ 4.6
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- 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 barrel features a stainless-steel lid is 75% quieter overall than plastic tumbler barrels.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get 1361 grams of rough rocks with nine different types of gemstones inside, five jewelry fastenings, grit, a strainer, and our innovative new GemFoam rock polisher.
- 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!
- 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.
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#10

NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit- Advanced features include Shutoff Timer and Speed Control - 907 Gram Barrel, 453 Grams of Gemstones, 4 Polishing Grits, GemFoam, Jewelry Fastenings
Brand: Blue Marble
$139.99
⭐ 4.4
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- 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 barrel features a stainless-steel lid is 75% quieter overall than plastic tumbler barrels.
- ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get 453.59 grams of rough rocks with nine different types of gemstones inside, five jewelry fastenings, tumbler grit, a strainer, and our innovative new GemFoam rock polisher.
- 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!
- 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.
Check Price