Search  for anything...

NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit - 3 lbs. Rough Madagascar Rocks for Tumbling including Unpolished Jasper and Quartz - Rock Tumbler Supplies include Rock Tumbler Grit & Jewelry Accessories

  • Based on 2,182 reviews
Condition: New
Checking for product changes
$29.99 Why this price?
Save $4.96 was $34.95

Buy Now, Pay Later


As low as $7 / 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: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Sunday, Sep 22
Order within 14 hours and 6 minutes
Available payment plans shown during checkout

Style: Madagascar Mix


Features

  • REAL GEMSTONES FROM MADAGASCAR - 3 pounds of raw rocks includes rose quartz, labradorite, red jasper, yellow jasper, indigo gabbro, and polychrome jasper, quantities of each gemstone may vary
  • FOUR GRADES OF GRIT - Coarse, Medium, Fine, Polish. Transform your raw stones from rough rocks to dazzling gemstones, this refill kit also works with all rock tumblers
  • JEWELRY FASTENINGS - Additional rock tumbler accessories include 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring to 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
  • HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!

Product Dimensions: 6 x 5.5 x 7 inches


Item Weight: 3.96 pounds


Country of Origin: China


Item model number: NGMADREFILLMEGA


Manufacturer recommended age: 8 years and up


Release date: December 4, 2019


Manufacturer: JMW Sales, Inc.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 22

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
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • 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

  • Good mix.
Style: Madagascar Mix
Good for beginners.
Reviewed in the United States on June 28, 2024 by Jeri Rich

  • 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

  • Not shiny
Style: Gemstone Mix
Our family enjoyed this entire process, ( truly, in these past hard months, it has been the only unity we have found, without arguing, so thank you!!) Unless we did something wrong, our stones never came out shiny.. they are still beautiful, but all are dull. I do feel we followed the instructions to the letter. Like I said either way, we love them, and it was fun! ... show more
Reviewed in the United States on March 3, 2024 by Katelyn A. Katelyn A.

  • Addicted
Style: Gemstone Mix
Love the rocks.
Reviewed in the United States on May 28, 2024 by Kimberly Abey

  • Great Starter for this hobby
Style: Madagascar Mix
Gifted this kit to my mom for her birthday, she loves it. Great starter pack for anyone looking to get into rock tumbling.
Reviewed in the United States on August 22, 2023 by Emily Snow Emily Snow

  • 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

  • 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.