Professional Rock Tumbler Kit, Large 2.5Lb Barrel Rocks Tumbler Kit, Stem Science Gift for Adults, 9-Day Timer&3-Speed Motor, Include Rocks, Grits and DIY Tools
£74.16
Price: £74.16
(as of Mar 01, 2025 01:14:19 UTC – Details)
From the brand
High Quality Products
StemRock Provide professional and high-quality products, and always adhere to the commitment of professionalism and quality.
The company focuses on providing customers with innovative products and providing users with intelligent and personalized product experience.
The products are diverse and reliable in quality to meet the needs of many people.
Rock Tumbler Kit
【Craft Your Own Gemstones】Uncover the hidden beauty of nature with ease using our Rock Tumbler, perfect for transforming rough stones into dazzling gems. It’s a fantastic tool for crafting your gemstone jewelry, including necklaces, rings, and more.
【Ideal Gift for Explorers】Explore geological wonders together and give them a Rock Tumbler to take them on an educational journey. It’s an excellent choice for STEM education and a unique present for geography enthusiasts on holidays like Christmas, New Year, and birthdays.
【User-Friendly Design】Our rock tumbling device boasts a 3-speed motor, a 9-day timer with memory function, and an LCD display. Easily pause the machine to check your rocks without losing your timer or speed settings, ensuring precision in your polishing process.
【Enhanced Performance】The 2.5LB large-capacity tumbling barrel lets you process more rough rocks at once. With 75% less noise than plastic tumblers, it offers an improved experience.
【StemRock Manufacturer’s Guarantee】We stand by our product with a 90-day refund guarantee and a 2-year accessory replacement policy. If you encounter any issues beyond the 30-day Amazon return window, contact us directly for a solution within 48 hours.
8 reviews for Professional Rock Tumbler Kit, Large 2.5Lb Barrel Rocks Tumbler Kit, Stem Science Gift for Adults, 9-Day Timer&3-Speed Motor, Include Rocks, Grits and DIY Tools
Add a review

£74.16
A –
Brilliant
Works very well so far as had it on for 4 days to date. I have noticed the device moves forward at speed 3 very gradually overtime so I would keep that in mind if placing on a small table and is left unattended for a long period of time. As expected can be noisy but kept in a spare room you won’t notice its on. Very pleased and works wonders on crystals and pottery shards. Looking forward for up coming project’s with this device. Also comes with spare belts. Great! Thank you!
Jono –
Tumbles well wirh adjustable speed
Tumbles well, hope it lasts. Will update after a few more barrel fulls.
james cook –
How do you get replacement belts?
The tumbler is great but need more belts. Where or how do you get them?
Conor –
Quieter than youâd think
Lovely kit for future rock houndsMuch quieter than I expected
P.Richards –
Rock tumbler
This comes with everything you need to make your first batch. As this is a present I haven’t had the ability to test it yet and give a true review but will do so once it has been used. I was shocked though to see how long it takes so it will be a test of patience. I am very happy with what it contains and the comprehesive instructions.
Edwin –
Excellent kit for crafting polished stones
This rock tumbler kit has been a fascinating addition to my hobbies. Turning rough stones into polished gems is a rewarding process. The kit is user-friendly, with a clear timer and adjustable speeds. The large capacity allows for processing multiple stones at once. The included materials, like rocks and grits, are of good quality. It’s a great way to explore geology and create unique pieces for jewelry or display.
V-C Foley –
not worth the time, effort or energy cost in my opinion
After seeing these on social media i thought it would be a great fun activity to do at home with my kids – everything you will need is included aswell some gemstones to tumble but we opted to stick some of own in too. It was really easy to set up and get started but i was very shocked to find it takes almost a whole month running to complete the cycle – which running 24hrs a day as following the instructions is extortionate in current electricity prices so we will not be completing that. Its advertised as low noise however whilest running in out outhouse behind 2 doors we could still here the bashing around and often the rubber would make a high pitched squeel. Its not worth the time, effort or energy cost in my opinion
P –
Big fan of smooth crystals
If you have a special someone who loves crystals and sea glass, like me, then this would make a great gift.It isnt particularly loud but it is noisy at the same time. For this reason I am not currently running it at night.You are meant to run this for around 7 days but as I’m not running it over night it may take me longer to get the desired effect.This set comes with a bag of rough crystals. I’ve added some glass as well to see if I can make my own sea glass.You get different gradients of grit which is needs to be added over the course of a few days but once you have used it, I’m not sure where you get more from.You also get some jewellery so you can display your smoothened crystals.This probably isn’t the best for those with no patience as you have to wait ages for the final result but I’m very excited to see how mine turn out. Will update with some photos on a few days.