SKU: 40678384489

Rock Tumbler

Sale price$44.99 Regular price$49.99
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

Rock TumblerLets rock and roll! Amp up your rock collection and explore the secrets of geology with the Thames & Kosmos Rock Tumbler! This custom designed, user friendly machine allows budding geologists and gem collectors to transform rough stones into beautiful polished rocks while exploring topics like erosion, weathering, and the geological rock cycle. The kit comes with an assortment of authentic rock samples to get you started including amethyst,

Let’s rock and roll! Amp up your rock collection and explore the secrets of geology with the Thames & Kosmos Rock Tumbler! This custom-designed, user-friendly machine allows budding geologists and gem collectors to transform rough stones into beautiful polished rocks while exploring topics like erosion, weathering, and the geological rock cycle.

The kit comes with an assortment of authentic rock samples to get you started — including amethyst, aventurine, rose quartz, and more — as well as four polishing grits. Use the included jewelry settings to create accessories from your specimens. The powerful, long-lasting motor is built with durability in mind: once you’ve polished the included rocks, you can continue your experiments by tumbling rocks, glass, wood, and other materials you collect on your own. The leak-proof, noise-reducing barrel and built-in timer also aid in ease of use.

       The included manual and poster guide children on their rock-polishing adventures, providing usage instructions as well as a wealth of scientific information about different types of rocks, how they are formed, and more.

  • Quality, innovative design provides a fresh alternative for a classic science device at a competitive price

  • Built-in timer includes different settings, allowing it to run for up to seven days

  • Includes jewelry fasteners to transform your rocks into accessories

  • 450g capacity (over 1 pound)

  • USB-C power supply

  • For Age 8 +
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 40678384489

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4.0 ★★★★★
Based on 20 reviews
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Verified Purchase
Brenda Allibone
Houston, US
★★★★★ 5
Sweet Potato Treats
Flavor Name: Sweet Potato, Size: 1 Pound (Pack of 3)
Out dog loves the sweet potato treats. They are her evening treat. They are large so I cut them in half.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
J
Verified Purchase
Jennifer Adams
Lowell, US
★★★★★ 5
My pug loves them
Flavor Name: Sweet Potato, Size: 1 Pound (Pack of 1)
First time buyer. My pug loves these treats. No issues with digestion. I’ll be a repeat customer
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
T
Verified Purchase
Talia T.
Louisville, US
★★★★★ 5
Happy Dog!
Flavor Name: Sweet Potato, Size: 2 Pound (Pack of 1)
My dog loves these!
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Reviewed in the United States on May 19, 2026
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Verified Purchase
Coco 20
Waukegan, US
★★★★★ 4
Tacky feel
Flavor Name: Sweet Potato, Size: 2 Pound (Pack of 1)
My dogs love these. However, lately, I noticed they were very gummy. I worry about their teeth bc they are so tacky. Im going to try another brand.
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Reviewed in the United States on April 15, 2025
J
Verified Purchase
Julie Steinmetz
Draper, US
★★★★★ 5
Only treat we give our baby!!!
Flavor Name: Sweet Potato, Size: 1 Pound (Pack of 1)
These are all natural treats that our dog loves. Each bag is different, so I know they are freshly made, not like other treats that are all the same shape and color. If you love your dog, you need these. I even send them to my granddogs.
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Reviewed in the United States on January 4, 2026

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