National Geographic Gemstone Rock Tumbler Kit STEM Educational Fun for Kids

MatontsJack
(17897)
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US $80.89
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Condition:
New
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Located in: Denver, Colorado, United States
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eBay item number:256738451844
Last updated on Jul 23, 2025 06:37:37 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item (including handmade items). See the seller's ...
Type
Science Fundamentals Kit
Color
Multicolor
Size
One Size
Shipping
Free Express United States Shipping
UPC
0689806952685
Brand
National Geographic
MPN
NGHOBBYTUMBLER
Category

About this product

Product Identifiers

Brand
National Geographic
MPN
NGHOBBYTUMBLER
Ean
0816448020421, 0713717896384
GTIN
0816448020421, 0689806952685, 0713717896384
UPC
0816448020421, 0713717896384
eBay Product ID (ePID)
22027052417

Dimensions

Weight
4.94lbs.

Item description from the seller

About this seller

MatontsJack

98% positive feedback•61K items sold

Joined Mar 2018
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
4.9

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Product ratings and reviews

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4.8
38 product ratings
  • 32 users rated this 5 out of 5 stars
  • 4 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Durable

Entertaining

Most relevant reviews

See all 32 reviews
  • by paulsgirl123
    Nov 06, 2019Top favorable review

    Awesome tumbler!

    This is awesome! It takes awhile for the rocks to go through the process (usually about 5-8 days per grit and there are 4 different grits). We are on the last grit for polishing. The stones already look amazing and I can't wait to see the finished product. We used all of the rocks that came with the kit as well as some stones from the beach. The next batch will be all beach rocks so it will be interesting to see how they turn out. Because of the rubber tub, the noise the tumbler makes is pretty quiet. We keep it in the basement of our home and sometimes I forget that it's there because it is so quiet.

    Verified purchase: YesCondition: NewSold by: bosco5333

  • by blbonniel
    Nov 07, 2018

    Fun project.

    I wasn't sure about the size when I first ordered. It is smaller then I thought but large enough to hold a small batch of rocks. I am new at rock tumbling and didn't realize it takes about a month of steady running and weekly changing the grit to get the end result. I am enjoying the process and the tumbler is very easy to run and very sturdy. I am happy with my purchase.

    Verified purchase: YesCondition: NewSold by: mirana-fenik

  • by pavilover
    Aug 09, 2018

    Gem Fun

    I purchased the rock tumbler for my 9 year old grandson who loves mining for gems. He is thrilled with the tumbler for it polishes his gems making them more eye appealing. Great value too.

    Verified purchase: YesCondition: NewSold by: *vanityhub*

  • by erisantan-93
    Jan 08, 2019

    cool

    it's a fun activity to do with your kids, but it only brings joy when you are filling it or opening it, the rest is just a noisy waiting game, so make sure you have where to put it, and be patient, also order extra grit kits you will need them eventually

    Verified purchase: YesCondition: NewSold by: iihotproducts

  • by nana-di
    Jan 24, 2018

    Husband Loves!

    I got this kit for my husband for Christmas. Every item was fun for him to view, He has rocks tumbling all the time. It is a winner for him.

    Verified purchase: YesCondition: NewSold by: ktmiley

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