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Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Gift for Kids All Ages : Geology Toy

4.5 4.5 out of 5 stars 8,678 ratings
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Brand Dan&Darci
Theme Geology
Age Range (Description) Kid,Adult
Item Dimensions LxWxH 12.99 x 9.06 x 5.51 inches
Educational Objective STEM

About this item

  • Turn rough rocks into polished gems: Discover and learn the fun process of rock tumbling with the Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job!
  • Complete kit: Includes: rock tumbler machine, low-noise barrel (1 lb. capacity), 4 grit packets, 1/2 lb. assorted rough rocks, mesh strainer, jewelry fasteners, gem storage bag, and an illustrated easy-to-follow instruction and learning guide booklet.
  • Powerful quality: Runs on a powerful heavy duty motor that will last for a very long time, and includes a leak-resistant barrel that runs quieter than the other brands.
  • Advanced features: Includes speed controls (providing more granular tumbling results), a 9-day timer (shuts off automatically when you desire), all displayed on beautiful LCD screens.
  • A fun and educational gift for all ages: It's not often that a science project can be fun and engaging, but this kit achieves both! It fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age. It fosters a love for science, geology and mineralogy in a fun and exciting way.

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Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Gift for Kids All Ages : Geology Toy


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From the brand


Product Description

Welcome to the fabulous world of rock tumbling!

For thousands of years, Mother Nature has been tumbling rocks in water and sand to make them smooth and shiny. Now it's your turn!

Collect all types of rocks and turn them — yourself — into colorful gemstones. Make your own jewelry, use them in crafts or decorations, or just collect them for fun!

Get the Dan&Darci Advanced Rock Tumbler, bring your curiosity, and get your gem collection started now!

Setup

ABOUT US:

We are Dan & Darci!

As you can tell from our name, we think that two is better than one. That’s why we create quality toys and science kits that are BOTH entertaining AND educational.

Our lab of mad scientists develop the coolest products — because they know that while you love to grow your brains and be the smartest one in the room, you’re only going to do it if you’re having fun!

Great Gift

STEM

Complete Kit

Instruction Booklet

Unique Gift Idea

Although this is extraordinarily educational, it’s also wildly entertaining for all ages, which makes it an excellent gift!

It’s not often that a science project can be fun and engaging, but this kit hits the nail on the head and fascinates children and adults as soon as they pull it out of the box.

Perfect STEM Project

Whether you’re a parent or a schoolteacher, you’ll quickly appreciate the vast knowledge that this can provide.

While being super fun and engaging, this one product provides young students with that essential hands-on experience they need to truly absorb this priceless knowledge and information.

Complete Kit

Everything is included - just add water!

Includes:

  • Rock Tumbler Machine and Barrel
  • 0.5 lb Assorted Rough Rocks
  • 4 Grit Packets
  • Mesh Strainer
  • Jewelry Fasteners
  • Rocks Storage Bag
  • Learning Guide

Illustrated Learning Booklet

Easy step-by-step instructions so that everyone can follow along easily.

Also included is a comprehensive learning guide on the history of rock tumbling, and explanation of all the rocks included in the kit.

Looking for specific info?

Customer reviews

4.5 out of 5 stars
4.5 out of 5
8,678 global ratings

Customers say

Customers like the fun and appearance of the rock tumbler. For example, they say it's a good hobby starter, it produces beautiful tumbled stones and that it' s easy to use. That said, some disagree on size, value, quality, noise, and performance.

AI-generated from the text of customer reviews

243 customers mention227 positive16 negative

Customers find the product easy to use. They mention that the instructions are well-written and easy to follow. The tumbler is great for beginners and has the power you need. They also say that the product is well-suited for smooth and efficient classroom use.

"...The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰...." Read more

"...are some findings included for finished rocks; and the instructions are reasonably good (accepting some significant caveats below)...." Read more

"I like how easy it was to use, the down side is it’s very loud when in use" Read more

"...A nice touch.Instructions couldn't be easier. If you can read and understand this review, you will have no problems...." Read more

85 customers mention65 positive20 negative

Customers like the appearance of the kit. They mention that the rocks are beautiful and the process is long. The kit is quiet and produces beautiful, shiny and round rocks after 30 days.

"...This little guy has produced some beautifully tumbled stones and now I can’t stop!!..." Read more

"...I’m on the second cycle right now and they looked BEAUTIFUL when I cleaned them off. I love this little machine and wish I could get numerous more!!!..." Read more

"...Overall product also appears nice and well built (with it being a gift I didn’t use it so I can’t attest to the functionality)." Read more

"...rocks that came with our set—but anything outside that ended up with some unpolished edges (although the smooth/flat parts still polished up well)...." Read more

69 customers mention69 positive0 negative

Customers have fun with the rock tumbler. They say it's a fun little hobby, a good hobby starter, and a great gift for youngsters. The small barrel makes it perfect for trying new things without having to waste, and the whole kit is a nice little place to start tumbling.

"...Good hobby starter, good array of accesories. Only turned off twice in to 30 days runs. Dont try and save and reuse the grit. Just buy more." Read more

"...The rocks look great and they enjoyed tumbling both ones that came with the machine and also rocks they found while hiking." Read more

"...It was easy to use and helpful for quite a few fun projects at work (preschool teacher)...." Read more

"...Great product for a fun “set it and forget it” sort of project." Read more

378 customers mention235 positive143 negative

Customers are mixed about the performance of the science fundamentals kit. Some mention that the machine does work well, while others say that it stopped running and was showing 'E' for error.

"...The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰...." Read more

"...It seems like this just isn't build for the repetitive motions needed for days of running for each grit...." Read more

"...this to tumble coins I find metal detecting and it works perfectly for my needs. Definitely need to run this where the sound won’t bother you...." Read more

"...It's a great starter and gets the job done... just on a smaller scale. So I would've had to drag my process out for months...." Read more

253 customers mention129 positive124 negative

Customers have mixed opinions about the noise of the science fundamentals kit. Some mention that it makes much less noise than expected, while others say that it is much noisier than anticipated. Some customers also mention that the product sounds like a waterfall or fountain.

"...I let mine run inside a plastic cooler and it muffles the sound to almost nothing." Read more

"I like how easy it was to use, the down side is it’s very loud when in use" Read more

"...The second thing is that it seems much quieter than I expected. I think the fact that the drum is overmolded with rubber helps a lot in that way...." Read more

"...The machine is so loud that we had to put it in the basement garage...." Read more

195 customers mention109 positive86 negative

Customers are mixed about the quality of the science fundamentals kit. Some mention that the drum and base unit both seem to be very nicely built, while others say that it just breaks after one year. The tumbler itself also has signs of wear and tear, with the rubber on the barrel starting to wear down a groove. Overall, the opinions are mixed, and it's recommended to read the reviews carefully before making a purchase.

"...The rocks that come with it are a good starter; there are some findings included for finished rocks; and the instructions are reasonably good..." Read more

"...It started to wear down a groove in the rubber on the barrel, so I turned it metal cap side towards the washer it was pushing against...." Read more

"...first thing I noticed was that the drum and base unit both seem very nicely built. The second thing is that it seems much quieter than I expected...." Read more

"...And it isn't. I can only conclude that crap materials were used and the wheel came out of alignment after being used for 18 hours...." Read more

107 customers mention51 positive56 negative

Customers are mixed about the value of the rock tumbler. Some mention that it's worth every penny, while others say that it was a total waste of time. The rocks that came with it were extremely disappointing, and the barrel shift does not stay.

"Not a good value. Barrel is tiny. I haven’t used yet but would go with different one. Small generic bag of rocks included...." Read more

"The tumbler works well enough, it's very reasonably priced, and generally a good kit...." Read more

"...It displays an E right away and the motor won't turn. Very disappointing...." Read more

"...from Polly Plastics here on Amazon as they have a solid and reasonably priced kit...." Read more

59 customers mention29 positive30 negative

Customers have mixed opinions about the size of the tumbler. Some say that it's small, perfect for a hobbyist, and can fit about anywhere. They say it reduces the size by half, and is good for small batches. Others say that the barrel is small and limited to the number of rocks you can tumble, and that the drum is small.

"I like the unit, is good for small batches of stage one and stage two...." Read more

"...There's also an included strainer, but we found it much too small, and just used a small colander from our kitchen...." Read more

"...The size is perfect for a hobbyist and it’s easy to use." Read more

"Much quieter than the Harbor Freight 3lb model. The tank is smaller so cannot do as many rocks at a time, but the noise factor makes it much more..." Read more

Best Gift!!
5 Stars
Best Gift!!
I am just starting out - an amateur Rockhound. This little guy has produced some beautifully tumbled stones and now I can’t stop!! The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰.
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Top reviews from the United States

Reviewed in the United States on January 31, 2024
Customer image
5.0 out of 5 stars Best Gift!!
Reviewed in the United States on January 31, 2024
I am just starting out - an amateur Rockhound. This little guy has produced some beautifully tumbled stones and now I can’t stop!! The machine works well, easy to follow instructions and great results . I have already stocked up on more grit to keep adding to my collection 🥰.
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3 people found this helpful
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Reviewed in the United States on June 6, 2022
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GJ
5.0 out of 5 stars Easy to use, but not built to last
Reviewed in the United States on June 6, 2022
Comes with only enough grit for one set of rocks, must purchase more grit for more rounds.

The tumbler pushes the barrel towards one side such that it pushes constantly against the washers on the rollers that keep the barrel in place. It started to wear down a groove in the rubber on the barrel, so I turned it metal cap side towards the washer it was pushing against. This caused wear on the washer. For grit 3, I angled the barrel by propping one side of the base up so gravity would pull it away from the washer as the rollers pushed it towards the washer to balance it in the middle. This was a little better, but I started you see wear/divets on the rollers. It seems like this just isn't build for the repetitive motions needed for days of running for each grit. It takes about a month for each round off new rocks.

We have it running in the garage on the other side of the wall as the master bedroom and we can hear it through the wall. My husband thought it was water leaking at first until he found where the noise was coming from.
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19 people found this helpful
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Reviewed in the United States on March 13, 2022
126 people found this helpful
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Reviewed in the United States on February 19, 2024
One person found this helpful
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Reviewed in the United States on January 30, 2024
One person found this helpful
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Reviewed in the United States on January 2, 2024
One person found this helpful
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Reviewed in the United States on February 11, 2024
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Reviewed in the United States on February 21, 2024
3 people found this helpful
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Top reviews from other countries

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BRANDON W.
5.0 out of 5 stars Great for kids - some patience required
Reviewed in Canada on January 2, 2024
Endurance
5.0 out of 5 stars Hace lo que dice.
Reviewed in Spain on January 8, 2024
Cliente Amazon
5.0 out of 5 stars Devo ancora provarlo
Reviewed in Italy on April 13, 2021
Berthold
5.0 out of 5 stars Erfüllt seinen Zweck
Reviewed in Germany on December 30, 2020
4 people found this helpful
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rilletdumans
4.0 out of 5 stars satisfaisant pour le moment
Reviewed in France on August 13, 2020
24 people found this helpful
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