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

  • Based on 2,327 reviews
Condition: New
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$34.99 Why this price?
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, Aug 11
Order within 12 hours and 44 minutes
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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
  • AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!

Brand Name: Blue Marble


Age Range Description: 8 years and up


Sub Brand: National Geographic


Manufacturer Warranty Description: We're proud to make the highest quality products which are backed by exceptional service.


Manufacturer Maximum Age (MONTHS): 1188.0


Manufacturer Minimum Age (MONTHS): 96


Global Trade Identification Number: 14


Set Name: National Geographic Rock Tumbler Refill Kit


Manufacturer: JMW Sales, Inc.


UPC: 816448025914


Manufacturer Part Number: NGGEMREFILLMEGA


Model Number: NGGEMREFILLMEGA


Unit Count: 1.0 Count


Included Components: 3 Pounds of rough Gemstones


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


Educational Objective: STEM


Supported Battery Types: No batteries required


Operation Mode: Manual


Is Assembly Required: No


Theme: Geology


Color: Multicolor


Size: 3 Pounds


Item Weight: 1.36 Kilograms


Item Dimensions: 5.37 x 5.31 x 5.44 inches


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 11

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Great rocks to turn into gems
Style: Madagascar Mix
Perfect for rock collectors and gem Collectors alike you get a ton of rocks that you tumble into gems the quality is amazing easy to tumble
Reviewed in the United States on January 12, 2026 by Kendra Bishop

  • Gift for great grandson’s birthday.
Style: Madagascar Mix
Bought this for great grandson’s birthday at his request. He was very pleased.
Reviewed in the United States on March 11, 2026 by Amazon shopper

  • This Rocks
Style: Madagascar Mix
Nice rocks that polish well.
Reviewed in the United States on April 7, 2026 by D

  • Super cool, just loud
Style: Gemstone Mix
Its a really cool my son loves it. The only down fall is its really loud.
Reviewed in the United States on October 31, 2025 by Cheyeene Brown

  • 👍🏼
Style: Gemstone Mix
Son Loved it! great product, with great quality. Cool hobby to have
Reviewed in the United States on August 16, 2025 by Brianna Mattingly

  • ok
Style: Madagascar Mix
good
Reviewed in the United States on January 21, 2026 by Vasily Knyazev

  • Refills
Style: Gemstone Mix
Nice refill packs
Reviewed in the United States on December 30, 2025 by Mark S.

  • Great for Polishing Rocks!
Style: Gemstone Mix
Grandson is enjoying working with his rock tumbler and his extended Rick collection! Polished rocks very nicely and gets good results. Takes time but does a nice job!
Reviewed in the United States on July 20, 2025 by Rick

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