NSI Rock Tumbler

by NSI
At other retailer: $81.94

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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.


Gender Boys, Girls
Dimensions 13.0x13.0x5.0
Model Number 635
Country of Origin China
  • 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

  • Verified Purchase

    Nice tumbler been needing one

    Read More
  • Birthday present
    Verified Purchase

    My daughter loves rocks and stones... Bought this for her birthday. She really enjoyed it.

    Read More
  • Gift for a kid
    Verified Purchase

    This user earned $2.00 in rewards for writing this review.Learn More

    This was a gift for my rock-obsessed daughter! Good price, good results. A bit loud, but I expect that from a rock tumbler. Came with enough grit for the first few uses.

    Read More
  • Rock tumbler
    Verified Purchase

    Rocks polished beautifully!

    Read More
  • 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

Questions & Answers

  • Q:

    "What size is the barrel? And is the barrel made of rubber?"

    • A:

      The barrel has a circumference of 4.5 inches and is plastic.

  • 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

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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. For the return policy on a Marketplace item, please refer to the Seller’s individual policy, located on the product page by clicking on the Seller name. 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.