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A complete hobby tumbling kit - everything you need to create polished gemstones: the tumbler, four polishing grits, nine types of real rough gemstones, sifter, plus a detailed full-color learning guide.
Makes a great gift for girls and boys! 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 tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.

2 year warranty is a big plus: 100% risk-free purchase + local phone service. Tutorial guide from beginners to experts: Make tumbling easy! We created this Instruction & Learning Guide with full-color contents for both beginners and experts.
Please kindly contact us for free replacement if the barrel and belt get broken or any parts missing for this kit, we ask you to be patient, and the new one will be shipped out in 24 hours. It's is a very decent and perfect gift for both children and adults!




Detailed learning guide – the learning guide includes polishing instructions along with fascinating information about the stones in the kit. Enormous variety - this rock tumbler refill kit has 5 pounds of unpolished rocks and gemstones consisting of a 1-pound gemstone mix, 1-pound jasper mix, 1-pound agate mix, 1-pound Madagascar mix, and 1-pound petrified wood mix.

Win-win we're always here to help if any quality issues and about the rock tumbler grit kit. Steps to polish rinse off raw stones - put stones into tumbler barrel - add grit - fill water to top of rocks - add 2/3 ceramic filler - close tumbler - tumble recommended for few days - rinse again and go to next grit.
Tips: the different weights and densities, will mean that jars will not have equal amounts of fullness. Widely used the rock tumbler refill grit kit comes with enough high-quality silicon carbide grit to make a nice polish of rocks, gems, glass, etc. Compared with poly plastic, ceramic filler can polish a more perfect stone. 4+1 one kit 4-step polishing grit pack and ceramic filler for use in 15 lb. And it compatible with any brand tumbler or stone polisher.

Create your own gemstones - rock tumbling is a hugely popular hobby for kids and adults! This professional 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.

Create custom jewelry from your newly polished gemstones! Transform your stones from rough rocks to dazzling gemstones! . Gemstones of nine varieties: tiger’s eye, Aventurine, Amethyst, Agate, rose quartz, Red Jasper, Dalmatian Jasper, Sodalite, Black Jasper.3

Assorted gemstones, 4 grit bags, jewelry fasteners. Includes 1/2 lb. 9 varieties of gems 05 lb: includes agate, amethyst, aventurine, Rose Quartz, Sodalite, Red Jasper, Hematite, Dalmatian Jasper, Tiger Eye.100% satisfaction guaranteed: love it, or your money back! If you are not satisfied with the kit, we'll refund you 100% of the money, no questions asked.
1. NATIONAL GEOGRAPHIC
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NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit, Includes Rough Gemstones, 4 Polishing Grits, Learning Guide, Great Stem Science Kit, Jewelry Fastenings
#adNATIONAL GEOGRAPHIC #ad - Easy to use – simple instructions and one-touch settings make rock tumbling fun and easy. A tumbler that's made to last – our high-quality tumblers are made with a durable motor that’s designed to last for years. 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.A complete hobby tumbling kit - everything you need to create polished gemstones: the tumbler, four polishing grits, nine types of real rough gemstones, sifter, plus a detailed full-color learning guide.
More information #ad
The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. An excellent STEM activity for kids. Makes a great gift for girls and boys! 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 tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
Brand | NATIONAL GEOGRAPHIC #ad |
Manufacturer | JMW Sales, Inc #ad |
Height | 8.06 Inches |
Length | 13.81 Inches |
Weight | 5.51 Pounds |
Width | 4.88 Inches |
Part Number | NGHOBBYTUMBLER |
Model | NGHOBBYTUMBLER |
Warranty | No Warranty |
More information #ad
2. KomeStone
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Rough Gemstones, 4 Polishing Grits etc., Science STEM Gift, KomeStone Extra Large 2.5 LB Barrel Rock Tumbler Kit, K1 Professional Rock Polisher Kit, with 3-Speed Motor 9-Day Timer-Include 3 Belts
#adKomeStone #ad - At last rough rocks will be turned out pretty gemstones with high quality and enough amount grits. 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.2 year warranty is a big plus: 100% risk-free purchase + local phone service. Tutorial guide from beginners to experts: Make tumbling easy! We created this Instruction & Learning Guide with full-color contents for both beginners and experts.
More information #ad
Your 100% satisfaction is our goal. 2-year warranty for free 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]. Com for help. Skill comes from practice. All in one hobby & educational tumbling kit: our komestone rock tumbler kit has everything that need for tumbling, screwdriver, the tumbler and the barrel, sifter, Jewelry Fastenings, including 1LB for 9 types of real rough gemstone rocks, 3 belts and 4 polishing grits and ceramic contact media, and illustrated tutorial guide. Please kindly contact us for free replacement if the barrel and belt get broken or any parts missing for this kit, we ask you to be patient, and the new one will be shipped out in 24 hours. It's is a very decent and perfect gift for both children and adults!
Brand | KomeStone #ad |
Manufacturer | KomeStone #ad |
Weight | 2.5 Pounds |
Part Number | KS0107RT01 |
Model | K1 |
Warranty | 2-Year Warranty for free exchange against manufacturing defects |
More information #ad
3. WireJewelry
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Includes 1.5 Pounds Of Rough Brazilian Stone Mix and 1 Batch Of 4 Step Abrasive Grit and Polish with Plastic Pellets, Wirejewelry Single Barrel Rotary Rock Tumbler Brazilian Mix Starter Kit
#adWireJewelry #ad - 2 year manufacturer Warranty and Lifetime Belt Replacement Warranty. Powerful 120 volt motor Designed to Operate 24/7 for Years. 1. 5 lbs brazilian stone mix; average size: 1.More information #ad
5" to 2" with 20-30 Gram Weight. 1 batch of premeasured grit & polish Coarse, Pre-Polish, Medium, Final Polish & Plastic Pellets. Professional grade single barrel Rotary Rock Tumbler with Leak Proof Rubber Barrel to Minimize Noise.Brand | WireJewelry #ad |
Manufacturer | WireJewelry #ad |
Weight | 10 Pounds |
Part Number | G24-1V2-KIT119 |
More information #ad
4. Leegol Electric
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Leegol Electric Rock Tumbler Machine, Single Drum 3LB Rock Polisher Single Barrel
#adLeegol Electric #ad - Easy to use: detailed tumbler instructions lead you step-by-step through the rock tumbling process. An improved, leak-proof barrel is lined with rubber for quieter operation.More information #ad
Packaging list: includes tumbler, five v-belt, 05lbs of walnut shell media, and instructions. Professional features: the durable motor allows you to tumble multiple batches of rocks. Power adapter: 120v/60hz Barrel Capacity: 3LB.Brand | Leegol Electric #ad |
Manufacturer | Leegol Electric #ad |
Part Number | Rock Tumbler |
More information #ad
5. WireJewelry
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Wirejewelry Professional Double Barrel Rotary Rock Tumbler with Two 3 Pound Capacity Drums 2021 Version
#adWireJewelry #ad - Professional grade Double Barrel - Arrives by Christmas Guarantee. Easy to follow full Color Step by Step Instructions Included. Powerful 120 volt motor Designed to Operate 24/7 for Years.More information #ad
2 3 pound capacity leak Proof Hard Rubber Barrel to Minimize Noise. 2 year manufacturer Warranty and Lifetime Belt Replacement Warranty.Brand | WireJewelry #ad |
Manufacturer | WireJewelry #ad |
Weight | 9.75 Pounds |
Part Number | G24-2V2 |
More information #ad
6. NATIONAL GEOGRAPHIC
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Includes Agate, Jasper, 5 Jewelry Settings and Polishing Grit, Gemstone, Petrified Wood, and More, NATIONAL GEOGRAPHIC Rock Tumbler Refill – 5 Pound Mix of Rocks and Gemstones for Rock Tumblers
#adNATIONAL GEOGRAPHIC #ad - Jewelry settings – once your rocks are polished, use the 5 included jewelry settings to create beautiful keepsakes or use the included storage pouch to keep your favorite specimens all in one place.Detailed learning guide – the learning guide includes polishing instructions along with fascinating information about the stones in the kit. Enormous variety - this rock tumbler refill kit has 5 pounds of unpolished rocks and gemstones consisting of a 1-pound gemstone mix, 1-pound jasper mix, 1-pound agate mix, 1-pound Madagascar mix, and 1-pound petrified wood mix.
More information #ad
Respected quality - national geographic is proud to provide only the highest quality STEM toys and all our kits are backed by our 100% satisfaction guarantee. Rock polishing grit – there are 20 total rock tumbler grit packets in the kit, enough for five complete tumbling cycles with any rock tumbler.Brand | NATIONAL GEOGRAPHIC #ad |
Manufacturer | JMW Sales, Inc. #ad |
Height | 5.9 Inches |
Length | 6.9 Inches |
Weight | 6.5 Pounds |
Width | 6.1 Inches |
Part Number | NGWORLDREFILL |
Model | NGWORLDREFILL |
Warranty | National Geographic Toys is proud to provide a 100% satisfaction with all our products so that you can buy with confidence. |
More information #ad
7. Brave Finder
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Polishing Grits, Rock Tumbler Refill Grit Kit, 4 Pounds Total Weight for Tumbling Stones Compatible with Any Brand Tumbler Stone Polisher, 4 Steps Grit Plus Ceramic Tumbling Filler Media
#adBrave Finder #ad - Package contents 1 pound, step #2 medium grit; 05 pounds, step #3 pre-polish; 05 pounds, step #1 coarse grit; 1 Pound, Step #4 Final Polish. Updated version rock tumbler grit the upgrade ceramic tumbling filler can be reused-no need to add new ceramic particles in every stage.Win-win we're always here to help if any quality issues and about the rock tumbler grit kit. Steps to polish rinse off raw stones - put stones into tumbler barrel - add grit - fill water to top of rocks - add 2/3 ceramic filler - close tumbler - tumble recommended for few days - rinse again and go to next grit.
More information #ad
Detailed and ratios please refer to the instruction. Includes 3. 5 pounds of polishing Grit + Ceramic Tumbling Filler Media. Tips: the different weights and densities, will mean that jars will not have equal amounts of fullness. Widely used the rock tumbler refill grit kit comes with enough high-quality silicon carbide grit to make a nice polish of rocks, gems, glass, etc. Compared with poly plastic, ceramic filler can polish a more perfect stone. 4+1 one kit 4-step polishing grit pack and ceramic filler for use in 15 lb. And it compatible with any brand tumbler or stone polisher.
Brand | Brave Finder #ad |
Manufacturer | Brave Finder #ad |
Part Number | LE |
More information #ad
8. NATIONAL GEOGRAPHIC
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NATIONAL GEOGRAPHIC Rock Tumbling Kit, 3LB Extra Large Capacity, an Educational STEM Science Kit, 3LB Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings
#adNATIONAL GEOGRAPHIC #ad - All-in-one tumbling kit - this kit has everything you need and then some! You get three pounds of rough rocks with nine different types of gemstones inside, five jewelry fastenings, grit, a strainer, and our innovative new GemFoam rock polisher.Create your own gemstones - rock tumbling is a hugely popular hobby for kids and adults! This professional rock polisher makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
More information #ad
An improved, leak-proof barrel features a stainless-steel lid is 75% quieter overall than plastic tumbler barrels. Use gemfoam for dazzling results - this rock polishing 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. A tumbler that's made to last - the durable motor has time and speed control settings so you can set it, and forget it.
Brand | NATIONAL GEOGRAPHIC #ad |
Manufacturer | JMW Sales, Inc. #ad |
Height | 6.7 Inches |
Length | 12.6 Inches |
Weight | 8.16 Pounds |
Width | 10.25 Inches |
Part Number | NGTUMBLER3LB |
Model | NGTUMBLER3LB |
More information #ad
9. NATIONAL GEOGRAPHIC
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3lbs Gemstones of 9 Varieties Including Tiger's Eye, Jewelry Fastenings & Detailed Learning Guide, Amethyst & Quartz, 4 Grades of Grit, NATIONAL GEOGRAPHIC Rock Tumbler Mega Refill Kit
#adNATIONAL GEOGRAPHIC #ad - 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.Create custom jewelry from your newly polished gemstones! Transform your stones from rough rocks to dazzling gemstones! . Gemstones of nine varieties: tiger’s eye, Aventurine, Amethyst, Agate, rose quartz, Red Jasper, Dalmatian Jasper, Sodalite, Black Jasper.3
More information #ad
3lb in total. Learning guide: our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts. Jewelry fastenings: 1 necklace, 1 set of Earrings, 1 keychain, 1 Ring. Four grades of grit: coarse, Fine, Medium, Polish.Brand | NATIONAL GEOGRAPHIC #ad |
Manufacturer | JMW Sales, Inc. #ad |
Height | 3 Inches |
Length | 3 Inches |
Width | 8 Inches |
Part Number | NGGEMREFILLMEGA |
Model | NGGEMREFILLMEGA |
Warranty | National Geographic Toys is proud to provide a 100% satisfaction with all our products so that you can buy with confidence. |
More information #ad
10. Dan&Darci
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Dan&Darci Mega Rock Tumbler Refill Kit, 0.5 lb, Jewelry Fasteners, 4 Grit Levels, Compatible with All Tumblers Rock Tumbling Supplies, 9 Varieties of Gems
#adDan&Darci #ad - Compatible with all rock tumblers: can be used in tumblers from any brand: Dan&Darci, Elenco, National Geographic, Thumler, Lortone, Smithsonian, and more.Assorted gemstones, 4 grit bags, jewelry fasteners. Includes 1/2 lb. 9 varieties of gems 05 lb: includes agate, amethyst, aventurine, Rose Quartz, Sodalite, Red Jasper, Hematite, Dalmatian Jasper, Tiger Eye.100% satisfaction guaranteed: love it, or your money back! If you are not satisfied with the kit, we'll refund you 100% of the money, no questions asked.
More information #ad
4 grit levels: grade 1: coarse, grade 3: Pre-polish, Grade 2: Medium, and Grade 4: Polish. Compatible with all rock tumblers. Mega rock tumbler refill pack: includes everything needed to turn rough rocks into beautiful gemstones.Brand | Dan&Darci #ad |
Manufacturer | Dan&Darci #ad |
Part Number | DD-010 |
More information #ad