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Rock Tumbler/Polisher Kit

$65.95
$69.95 $65.95
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Rock tumbler kit for beginners...

Turn rough rocks into beautiful gemstones!

Discover the magic of geology with this Electric Rock Tumbler Kit — the perfect STEM activity for kids and hobbyists alike. Watch as rough, dull stones transform into smooth, shiny gems through the power of science! It’s a hands-on lesson in erosion, time, and transformation — and an incredibly fun way to learn how nature shapes our world.

This complete rock tumbling set includes everything you need to start polishing right away: rough stones, multiple grades of grit, and easy-to-follow instructions. Ideal for classrooms, home projects, or weekend experiments, this kit combines education, creativity, and discovery in one engaging experience.

  • Engaging STEM learning: Learn about geology, erosion, and the rock cycle.
  • All-in-one kit: Includes real rough stones, grit, and a quiet motorized tumbler.
  • Perfect gift for aspiring geologists: Every great geologist starts somewhere, often with a rock tumbler, just like this one, as a kid!

Check out the dropdown sections below for more product information. Fun, educational, and endlessly rewarding — order today and start polishing your very own gemstones!

What's Included?

A complete starter kit containing everything you need to start your rock tumbling hobby.

  • Rock tumbler with durable, low-noise motor
  • Leak-proof rubber tumbling barrel
  • Wheel drive belt
  • 4 grades of grinding grit:
    - Coarse powder
    - Fine grinding powder
    - Polishing powder
    - Fine polishing powder
  • Assortment of real rough stones
  • Jewelry making accessories
  • AC/DC Power adapter
  • Easy-to-follow instructions

Need more grit? Contact Us

Learning Outcomes and Benefits

Hands-on geology: Experience firsthand how natural forces shape stones over time. Learn how to identify many different types of stone.

STEM learning through play: Learn about abrasion, erosion, and mineral structure. Experiment with different types of stones, grits, and tumbling cycles to achieve different effects.

Encourages patience and observation: Watch gradual changes unfold over days and weeks. Kids learn that great results take time — building patience, perseverance, and focus that will help them succeed in future projects.

Inspires creativity: Use polished stones for jewelry, crafts, or collections. Create gifts for family and friends using precious stones that you polished yourself.

Sparks long-term curiosity: A great introduction to Earth science and geology as a hobby.

Frequently Asked Questions (FAQ)

Q: What age group is this suitable for?
A: This rock polisher is designed for kids aged 8+, but older teens and adults will enjoy it too — it’s a real, working geology tool. Younger kids can also use it with adult supervision.

Q: How long does it take to polish rocks?
A: It's dependent on a number of factors including the type of stones being polished, whether it's a mix of stones or all one type, the grit used, and the desired level of polish. As a guide, stones can be rolled smooth within 1-3 days, can be shined in 4-6 days, and a high-glossy shine can be achieved in 7-10 days. For some particularly hard stones, the full process (all 4 grits) can take up to a month — but patience pays off since some of the hardest stones are also the most beautiful!

Q: Is it noisy?
A: Rock tumblers by their design can be noisy, but the rubber barrel design of this rock tumbler makes it about 75% quieter than other rock tumblers, so it’s perfect for home use.

Q: Can I use my own rocks?
A: Yes! Collect stones from your garden, beach, or hiking trips — just make sure they’re hard enough (like quartz or jasper) for polishing. Stones collected from the beach will be quicker to polish to a high shine since the sea has already done much of the work in naturally grinding these stones smooth.

Q: What can kids do with the polished stones?
A: They can start a collection, make jewelry, or display them proudly. It’s also a great project for science fairs and geology lessons.

Q: Is it safe for kids?
A: Yes, all materials are safe for supervised use. Adult assistance is recommended when setting the rock tumbler up for younger kids. Since it operates on the mains power for extended periods of time, be sure to place it in a location where it can be left undisturbed.

Q: What happens if the power goes off mid-cycle?
A: Fine rock powder in the barrel can behave like cement if the barrel is not rotating, so if the power goes off, it's advisable to rinse the stones to prevent the sediment setting. Once power returns, you can simply add some grit again and continue the cycle.

Q: Does it get hot during operation?
A: A small increase in temperature (a few degrees) is normal due to friction over prolonged tumbling cycles. But the device itself does not generate heat during operation.

Product Specifications

  • Dimensions, assembled (approx.):
    - Width: 14.7 cm
    - Depth: 20.8 cm
    - Height: 17 cm
  • Box dimensions (approx.):
    - Length: 27 cm
    - Width: 22 cm
    - Height: 11 cm
  • Box weight: 1.4 kg
  • Materials: ABS plastic (non-toxic), rubber, steel, aluminium, electronic components.
  • Max load: 450 g
  • Operating voltage: 12V DC
  • Power consumption: 0.5 - 1.5 Amps (max)
  • Operating temperature range: 0-38ºC
  • Operating humidity range: 35-90%
  • Power supply: mains AC adapter. Works on standard household socket outlets (Select 110V model for the US and the 220V model for all other countries).

Suitable age: 6+ (adult supervision recommended for younger children).

Links and References

Blog posts about STEM for kids:

The Crucial Role of STEM Education

Nurturing Young Minds in the Digital Age

Rock Tumbling: A Fun Hobby for All Ages

Other related resources:

Youtube playlist: Rock Tumbling for Beginners

Shipping and Warranty Info

Shipping Information

Orders are processed for dispatch within 1–2 business days. Typical delivery times following dispatch for this product, depending on region are:

  • US: 5-8 days (Orders are shipping as usual. The U.S. government shutdown isn’t causing any delays.)
  • UK: 5-8 days
  • EU: 6-13 days
  • Canada: 7-14 days
  • Australia: 7-14 days

All orders are shipped with tracking, where available. Please refer to our Shipping Policy page for further detail.

Warranty & Satisfaction Guarantee

All products come with a 14-day satisfaction guarantee. If you're not happy with your purchase, contact us and we’ll arrange a refund or replacement — no hassle. Please note that to qualify for a replacement or refund, products must be in their original, unused condition. Please refer to our Returns and Refunds policy for more information.

Packaging

We aim to minimize waste while protecting your order. All products are securely packaged in padded or bubble-wrapped, waterproof mailing bags. Depending on the item, they may also be enclosed in plastic or cardboard boxes (suitable for gift-wrapping) to ensure protection. Where boxes are not necessary (e.g., basic electronics tools and materials), items are shipped in bubble-wrapped mailing bags without additional boxing.


Ships from: International Warehouse

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Customer Reviews

Based on 14 reviews
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Kathleen Jones
My mum is delighted

It’s great I bought it for my mum who’s 83, she loves rummaging through the garden looking for appropriate stones/pebbles that are worth polishing. The kit is great as it has everything to get you started when it arrives. The only downside it can be a bit of a constant noise but I built a polystyrene box to cover it perfect soundproof. Even the dog don’t mind.

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Hi Kathleen, thank you for taking the time to write a review and for sharing your photo. Lovely, thoughtful gift for your mum! Delighted she's enjoying it, she looks really happy in that photo :)

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Aurelio Larkin
A bit noisy but it's a great kit

Package was a little damaged, but the product was not, everything was fine. It is a bit noisier than I thought it would be, but I will put it in a different room, and so it will not bother anyone.

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Ervin Reinger
Great rock tumbler

It really works very good!! Cool!! ♥️♥️♥️

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Fanny Durgan
Great product, got as a Christmas present

The beauty of it, is automatic switch off. I'm tumbling the first batch and waiting for the result. Another good thing is that the tumbler does not overheat.

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Shayne Andrews
Amazing what you can find in a plain stone

Polishes stones to a mirror finish... stones that look opaque turn out to be opalescent or even transparent once they are polished up. My pockets are full from picking up interesting-looking stones every day to bring home and polish up.

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