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๐ Turn rough stones into dazzling gemsโquietly, professionally, effortlessly!
The Professional Rock Tumbling Kit Platinum Series features a large 2-pound barrel, ultra-quiet design with sound-dampening cover, and a versatile timer with day/hour settings. This all-in-one kit includes rough rocks, multiple grit bags, patented GemFoam polisher, and jewelry fastenings, making it perfect for both kids and adults to create polished gemstones with ease. Developed by Blue Marble and National Geographic, it combines professional-grade performance with award-winning educational value.






































| ASIN | B0C2JN3S9M |
| Age Range Description | 8 years and up |
| Brand Name | Blue Marble |
| Customer Reviews | 4.3 4.3 out of 5 stars (566) |
| Educational Objective | Development of exploratory skills and manual dexterity |
| Included Components | Platinum Series Ultra Quiet Gem Polisher Kit |
| Is Assembly Required | No |
| Item Dimensions | 40.9 x 19.4 x 34.7 centimetres |
| Item Type Name | Ultra Quiet Rock Tumbler Kit |
| Item Weight | 2 Pounds |
| Manufacturer | Blue Marble |
| Manufacturer Part Number | NGULTTUMBLER2 |
| Material Type | Plastic |
| Maximum Age Recommendation | 1188.0 |
| Model Number | NGULTTUMBLER2 |
| Set Name | Ultimate Rock Tumbler Kit |
| Size | One Size |
| Sub Brand | National Geographic |
| Theme | Geology |
| UPC | 810070622329 |
| Unit Count | 1.0 count |
A**I
Got this for a present for my partner and he loves it. This one was a upgrade from the last one he has, it has a bigger barrel. And it really is super quiet. It's out in the garage and every time I'm out there, I keep thinking I have washing on. Highly recommend.
R**N
I love this tumbler! Sadly, the barrel popped only 3 months after I bought it and it's been making this clicking sound since. I think it was from tumbling pyrite? I cleaned it as best I could but the clicking persists. Can't find any tips on how to resolve it.
A**.
So far it has done well as a newbie-intermediate adult using a tumbler. Controls are not that complex. It is a one large barrel inside the tumbler spinner box. The hexagon-shaped knob holds the metal lid down onto the rubber barrel and rubber suction holds the half-rubberized inner lid inside in place so be careful when trying to open the inner barrel for first time. So, opening it - try wiggling it side to side open helps. It gets better over time. There are jewelry making items, foam polishers, a strainer (amazing to find) and handful of rocks included with the tumbler. At first when I got it, I initially thought I didn't get the accessories - like the grits and rocks but it's inside the barrel when you get it, which is why I included the picture. The very lowest setting was relatively quiet like a semi-loud washing machine (you are dealing with rocks remember), but you can soundproof it by putting it into a kitchen or hall cabinet or by other means. It's a machine so it needs to have air. Be careful to check the machine over long periods for overheating, belt wearing (strange noises) or issues like leaks (which I haven't had yet). I do a day or two at a time and take the rocks out of tumbler, strain the waste water into reusable disposable bottle/container and then reuse the tumbler water and try again the next day (to give machine a chance to rest) so that I can sleep from the noise (this might take longer and more steps but being in apartment or the sleep hours bothering people, this method might work before the grit sand water separate overnight might keep it from set into a cement-like substance on the rocks. I learned from other tumblers - DO NOT put the any tumbler rock water down the drain because it will wreck your pipes, clog and/or cement it up. I don't have a yard to dump it safely but put the tumbler waste into disposable milk or other containers as I use separate gloves, dollar store funnel and tote storage lid to help clean up without getting everything on the counters. Tips- check the local hobby shops for grit, they might carry it in bulk but sometimes it might be cheaper online for a smaller box. I haven't tried the foam accessories yet, so I don't know how well they work. Do the research on tumbling, be aware of the risks - watch for any health symptoms or what not. I came across some stuff about some Quartz crystals to be cautious about. Cheaper isn't always better choice over sound quality. I looked around locally for any tumblers, but everything was too cheaply made or way too loud for my usage in an apartment building. This one is better quality tumbler, compared to the cheaper department store brands like Maxx brand Tumbler or National Geographic cheaper blue "cup" tumbler which looks too flimsy or cheaply made to do quality work. I had been looking around for a quieter one and I have seen that Harbor Freight store had double barrel rock tumbler with no rock attachments or anything to cover to muffle the sound, but I had difficulty trying to figure out how to safely open their tumbler when I got it. I return that back to Harbor Freight and tried this one. So far, this specific rock tumbler was wider than other brands and has done rather well in sound and durability.
A**R
Very quiet. Great tumbler. Large barrel so it can take lots of ricks.
S**.
Is now half way through its first month long polishing cycle. So far is working very well, and the results are good
Trustpilot
1 month ago
3 weeks ago