National Geographic Professional Rock Tumbler Kit- Stone Polisher for Kids and Adults, Complete Kit with Durable Tumbler, Rocks, Grit, and GemFoam Polisher, A Great STEM Hobby

Bought a cheaper version of this, and it broke a drive belt almost daily. Sent it back for a refund and bought this one. This is much better, and has been running for a couple of weeks now with no issues. It is also considerably quieter than the other one (although I still wouldn't want it in a room I spend a lot of time in). Feels good quality, it's been running well and it is really simple and easy to use. Very impressed.

Great for a beginner. Handy booklet to tell you about the stones. I got 2 large chunks of Adventurine which look nice but can't be made into earring or pendants. Plenty of Rose quarts some of which disappeared to small pieces, could be used in UV Resin jewellery. 1 exceptionally tiny amethyst , very little use except for small pendant. Plenty of Tigers Eye. One largest piece of Sodalite. Quite a bit of 'Dalmation stone? . Dont know if Hematite is in my lot, some Jasper and poss agate ... hard to tell. The machine itself is quiet enough in my conservatory and can't be heard through the house, easy to use . The booklet gives clear instructions too which is good. The grits are only enough for one tumble but the polishing gem foam can be used 6 times. The tumbler is sturdy and easy to use but mine has a tendency to bleed to the bottom edge of the tumbler onto the rollers and butt up against the rotating wheels so I turn the tumbler tub around . Not sure what lasting effect this will have on the tumbler rubber. All in all I would recommend this set , as ive bought more gem stones from NG to practice on. Its neat and compact and easy to use, but for children I would recommend adult supervision and it to be kept out the way of curious little fingers. You need a lot of patience as each procedure takes days.

Worked well for 2 months and got good results on 2 sets of rocks but now it won't stay on and just cuts out all the time. Thanks to the product support for a replacement machine. Very good communications. Well done.

Works well

Only lasted about three months when I got the dreaded 'E' error code - to be fair the seller let me return the item for a refund with no quibbles. Apparently these machines are known to be prone to this error/breakdown. I purchased a second one but it only lasted around two months, they are just not up to the job. This time I've not returned the item but instead looked online (YouTube) for advice from rock tumbling enthusiasts as to how to modify the machine in order to bypass the error. Even if this doesn't work it is worth keeping the machine just for the rubber barrel, which is very good. I've also managed to purchase a British made rock tumbler from a different online seller so hopefully will have better luck with that one.

Its great. Only thing i had to do was construct a sound proof box, as it was driving my wife crazy. 🤣

Great little tumbler. First one we’ve bought and very pleased with it so far. Have watched videos and reviews after we bought it so have decided to upgrade the grit and polish for the final 2 stages to get a good shine. Only on the second stage so far, but very happy with how the rocks looked after week 1. Good selection of rocks included in the kit. But buy some ceramic media and polish for good results.

The tumbler is fine - works and is quiet as far as tumblers go thanks to the rubber barrel The included rocks for tumbling are a let down though. A few decent sized pieces of cheap rose quartz, a piece of tigers eye. some dalmation jasper, some agate and a lot of fingernail sized tiles of red jasper which are unsuitable for tumbling. The supplies of grit are mean too. The biggest let down ( and the reason for the 3* rating) is that spare barrels are not available for the machine so if you want a dedicated barrel for the final polish then choose another brand which does supply them. This is a major downside if you want a good quality finish as any trace of a coarser grit left in the barrel will scratch the final finish and ruin all your hard work.

E davvero bello vedere i bambini quanta passione dedicano a questo attrezzo. La sua collocazione non può avvenire in casa in quanto un po' di rumore lo fa e andando di continuo anche per 7 GG di continuo non è il massimo. Lo consiglio a tutti i giovani esploratori che vogliono trasformare il grezzo in gioielli.

The supplied rocks tumble really well, we also have tried our own rock finds and get satisfying results. Great for my autistic daughter who loves geology.

Allt var bra

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Es muy práctico, de momento lo estoy usando en la primera fase con grano grueso y varias piedras necesitan más días, lleva como una semana en esta fase más o menos, y le he puesto más tiempo, el tambor es muy sencillo de abrir, como precaución uso guantes y mascarilla al sacar las piedras y lo hago en un lugar ventilado, hay muchas muestras lo que algunas son muy pequeñas y amatista, solo hay una y es pequeña, me hubiera gustado que llevara 2 o 3, el grano bien, aunque hay poca cantidad y solo me da para un uso, el tambor no hace mucho ruido, tuve que comprarle un adaptador al enchufe pues no venía incluido y no ponía nada en las instrucciones, antes de comprar el producto, pero lo compré en un bazar chino, en general el kit va bastante bien y da buenos resultados por ahora, pues me faltan las otras fases, bastante satisfecha.