NSI Rock Tumbler

by NSI
Today: $49.49
At other retailer: $84.04 Save $34.55 (41%)
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ITEM# 12323731
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    ITEM#: 12323731

    • Change rough stones into beautiful, high-luster gemstones with this heavy-duty rock tumbler
    • Art kit includes amethyst, jasper, agates and other semi-precious stones
    • Hobby kit provides a great activity for kids and adults alike
    • U.L. listed
    • Package includes rock tumbler machine, rough semi-precious stones, grit, polish, jewelry settings and detailed instructions
    • Recommended for ages 10 and up

    CAUTION - Electric Toy: Not recommended for children under 10 years. As with all electric products, precautions should be observed before handling and use to prevent electric shock.


    Theme Children
    Gender Boys
    Dimensions 13.0x13.0x5.0
    Model Number 635
    Country of Origin China

    Customer Reviews

    5 Stars
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    1 Stars
    • Most Helpful

    • Rock Tumbler was a hit!
      Verified Purchase

      My daughter has a small jewelry making business and wanted this to expand her line. She is loving it so far! It does a good job with the stones she has collected.

      Read More
    • coin cleaner
      Verified Purchase

      My hobby is metal detecting. I use the tumbler to clean the coins that I dig up and that are not of collection value. The banks won't take a bag of dark coins. I use plain sand and it works great. For collectable copper pennies I use coffee grounds. This cleans them but leaves the patina intact. Before this I used a shell casing tumbler which was much sturdier but this machine is more a childs toy but it does the job and coasts much less.

      Read More
    • Rock Tumbler
      Verified Purchase

      Good quality!Child enjoy the experience of polishing rocks.

      Read More
    • Good Gift
      Verified Purchase

      Purchased this for as a gift for my son. Although it is a bit small he loves it and it has been running since Christmas day. I would recommend it to anyone who has a rock hound in their house.

      Read More
    • Most Recent

    • For my grandsons
      Verified Purchase

      They are very loud and take weeks to polish rocks. They have had fun with them because they use them in their garage.

      Read More
    • Rock enthusiast
      Verified Purchase

      Great fun for kids. Although it does take patience and needs to be placed somewhere like garage due to the noise. Good putchase plus I bought the bag of extra rocks to go with it.

      Read More
    • Noisy, motor burned out after one use
      Verified Purchase

      Overstock asks me to review past purchases, so here goes. We purchased this quite a few years ago when our now 19 year old was into rocks and science projects. The tumbler only worked for one small batch of rocks. The supplies included were only enough for one batch. The rocks were not very smooth when they were finished. An additional step is required to make the rocks shiny, and the product needed is not included in the box. Also, the motor was loud and didn't work after just one use.

      Read More
    • Not for the impatient! Takes weeks!
      Verified Purchase

      To encourage my grandson's interest in geology, I bought this you. It was dismaying to discover it took WEEKS and a lot of noise and mess to get the polished stones shown on the box. Not really worth it.

      Read More
    • Not with the money
      Verified Purchase

      Broke after a month, very messy, hard to use, but you can't do much ice you've use it.

      Read More

    Questions & Answers

    • Q:

      "Can this be used to tumble sea glass?"

      • A:

        Hello clp4006, we can appreciate the fact you want a firsthand account of the product. You will receive an email notification every time you get a response. Thank you for shopping with us.

    • Q:

      "Why did you choose this product?"

      • A:

        For classroom activity with students.

      • A:

        Requested as a gift for a 9 year old

      • A:

        I felt it might be a starting hobby that my great grandson may want to carry over into teen years.

      • A:


      • A:


      • A:

        this product had good reviews.

      • A:

        My grandson will turn 5 in September and has a fascination with rocks! He will covet this gift!

      Read more Read less

    Shopping Tips & Inspiration

    Shipping & Returns

    Contact Information

    Usually leaves our warehouse in 1-2 business days. *

    Shipping Information:

    Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
    Standard shipping details
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    Standard Return Policy:

    Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

    FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

    For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.