Search  for anything...
Blue Marble

National Geographic Rock Tumbler Refill Kit – 3 lbs. of Rough Gemstones and Rocks for Tumbling Including Amethyst and Quartz – Rock Tumbler Supplies Include Rock Tumbler Grit and Jewelry Accessories

    • Based on 2,225 reviews
Condition: New
Checking for product changes
$34.99 Why this price?

Buy Now, Pay Later

As low as $8 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jan 13
Order within 4 hours and 33 minutes
Available payment plans shown during checkout

Style: Gemstone Mix


Features

  • Gemstones of nine varieties! Tigers Eye, Amethyst, Aventurine, Rose Quartz, Red Jasper, Agate, Sodalite, Dalmatian Jasper, Black Jasper. (3lb in total)
  • Four grades of grit. Coarse, Medium, Fine, Polish. Transform your stones from rough rocks to dazzling gemstones!
  • Jewelry fastenings. 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring. Create custom jewelry from your newly polished gemstones!
  • Learning guide. Our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts
  • Satisfaction guaranteed! The National Geographic STEM series provides kids high-quality educational toys that are a whole lot of fun! If your experience is anything less than extraordinary, let us know so we can make it right for you

Brand: Blue Marble


Age Range (Description): Kid


Color: Multicolor


Theme: Geology


Item dimensions L x W x H: 5.37 x 5.31 x 5.44 inches


Brand: Blue Marble


Age Range (Description): Kid


Color: Multicolor


Theme: Geology


Item dimensions L x W x H: 5.37 x 5.31 x 5.44 inches


Material: Plastic


Seasons: All Seasons


Included Components: 3 Pounds of rough Gemstones


Item Weight: 1.36 Kilograms


Size: 3 Pounds


Number of Pieces: 9


Style: Gemstone Mix


Model Name: Rock Tumbler Mega Refill Kit - 3lbs Gemstones of 9 Varieties


Special Feature: Jewelry Fastenings


Art Craft Kit Type: Rock Tumbler Refill Kit


UPC: 816448025914


Manufacturer: JMW Sales, Inc.


Product Dimensions: 5.37 x 5.31 x 5.44 inches


Item Weight: 2.99 pounds


Country of Origin: China


Item model number: NGGEMREFILLMEGA


Manufacturer recommended age: 8 years and up


Is Discontinued By Manufacturer: No


Release date: September 10, 2018


Language: English


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jan 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great Rock Polisher for the price!
Style: Gemstone Mix
I purchased this for a Christmas Present for one of my granddaughters. I saw cheaper ones but opted for the heavier one and am glad I did. Works just like a more expensive one I have seen. The rocks came out perfect!!! I ordered extra sand and rocks and have found that it will give her many hours of activity with this rock polisher. When she comes to visit me I plan to help her make jewelry from some of her favorite rocks. ... show more
Reviewed in the United States on July 15, 2020 by Shar B.
    • Addicted
Style: Gemstone Mix
Love the rocks.
Reviewed in the United States on May 28, 2024 by Kimberly Abey
    • Love this set!
Style: Gemstone Mix
Got a rock tumbler for Christmas and I love it! Had to get more grit and rocks and used the same brand as the tumbler and the rocks it comes with are really pretty and they turn out so well! Comes with instructions so it’s easy to follow. This makes a great gift for rock lovers.
Reviewed in the United States on August 8, 2022 by Samantha Burt
    • Great project for my grandkids
Style: Gemstone Mix
Very good value My grandson's really liked it we had a lot of fun and still are enjoying it. The age all depends on how engaged you are with the child you should supervise him with these anyway If a 2-year-old can really enjoy it then I think most children will as well.
Reviewed in the United States on October 11, 2024 by Jack Mayes
    • Good mix.
Style: Madagascar Mix
Good for beginners.
Reviewed in the United States on June 28, 2024 by Jeri Rich
    • Gift for grandson but he liked it and will do some here.
Style: Gemstone Mix
A bit noisy but that’s expected. It was exciting for an 11 - 12 year old grandchild to use with us on his visits. Next he’s going metal detecting in the pathways where Sherman’s army marched through his family land. You take advantage of what is locally available. Fortunately he lives in a very historical area. It’s great. ... show more
Reviewed in the United States on January 22, 2024 by Lilly
    • Thank you for being so quick and efficient.
Style: Gemstone Mix
He loved his gifts. I’m so impressed that they came so quickly. Thank you so much.
Reviewed in the United States on May 26, 2024 by Beth
    • Who doesn’t love rocks?
Style: Madagascar Mix
Got these as extras for our grandsons tumbler! He was so excited to pick out some to use in his new tumbler!
Reviewed in the United States on January 22, 2024 by Brenda Parsons

Can't find a product?

Find it on Amazon first, then paste the link below.