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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Complete Rock Tumbler Kit with Durable Tumbler, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Educational Stem Science KitCREATE 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 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
- 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 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 one pound of rough rocks with nine different types of gemstones inside, five jewelry fastenings, tumbler grit, a strainer, and our innovative new GemFoam polishing foam.
- 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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 616 reviews
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Product Reviews
★★★★★ 3
I like it, but
Flavor Name: Wishbone, Size: Large
Two large dogs, two different experiences. They both loved the toy, but one chewed it up within a couple of weeks - much longer than most toys last for him. The other one still loves it and uses it daily,(has had it for two months) but if I don't trim off the sharp points that form, it gets blood from his gums on it. Would still recommend it as each dog is different. Worth a try.
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Reviewed in the United States on January 21, 2014
★★★★★ 5
Fast delivery
Flavor Name: Jerky, Size: X-Small/Small
Came in on time and was what I expected & the dogs enjoy it
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Overall a really great toy for all sizes of dogs
Flavor Name: Original Jerky, Size: X-Large, Flavor Name: Original Jerky, Size: X-Large
I ordered this product on Thursday and it said that it was going to be at my house in a week , but to my suprise it got delivered on that Saturday. My puppy loves these nylon bones. She is a 12lb dog but I ordered the X-Large size, and she loves it! The nylon bones really work in keeping her teeth clean of tar for the most part, and she loves the flavoring inside. The only downfall is when she got to the marrow part it stained my light sheets. I replaced them with darker sheets and there is no trace of the bone. Overall a really great toy for all sizes of dogs!
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Reviewed in the United States on June 26, 2017
★★★★★ 5
The ONLY Bones/Chews Dog-Approved in Our House!
Flavor Name: Original Jerky, Size: X-Large
We have 2 purebred pitbulls, both adult males who weigh between 75-80 pounds. We bought a huge assortment of bones, treats, and chews when we first got our boys (they're rescues, and we got them at the same time). They strongly favored these Marrowchews, even over other, imitation products of different brands.
We actually didn't know they had marrow INSIDE the bones for quite some time, and as soon as we realized that, we understood why our dogs loved them so much! The way the marrow is embedded in the bone, but a ways in from either end, is really clever. The dogs can surely smell it long before they can taste it, and it seems to keep them really interested and motivated at first. Then, they get to the actual marrow, and they are working on these bones non-stop until it's completely gone. The way they are made is also really unique; they sort of 'splinter' as they get chewed, and it actually helps with doggie dental care, cleaning the teeth and massaging the gums. There is no mess with these bones, no pieces flaking or chunking off, anything like that. They are also completely odor-free. With other bones/chews, they'll start them, but lose interest really quickly, and never so much as look at those again. These specific Marrowchews are truly the ONLY ones that keep our dogs interested, and for a significant amount of time, too. They'll work on the XL sizes daily throughout the day for a total of 1-2 hours, and they last a couple of months, easily. And keep in mind, these are pretty
aggressive chewers!
HIGHLY recommend these, and the price on Amazon is the best anywhere!
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Reviewed in the United States on March 24, 2014
★★★★★ 5
Durable and fun
Flavor Name: Beef, Size: Medium/Large
I have two dogs and I only bought one bone over a month ago. They’ve both been chewing on it and it’s held up really well. I wouldn’t say they’re aggressive chewers, but they do like chewing.
They’re still picking it up and using it, so they’re definitely not bored with it. As for me, it’s been a pretty great buy.
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Reviewed in the United States on April 14, 2024