






💎 Transform Rough Rocks into Polished Treasures — Join the Rock Tumbler Renaissance!
The National Geographic Rock Tumbler Refill Kit offers 5 pounds of assorted unpolished rocks and gemstones, 20 rock polishing grit packets for five full tumbling cycles, and 5 jewelry settings to create personalized keepsakes. Designed for ages 8+, this STEM-focused kit includes a detailed learning guide, making it perfect for both beginners and experienced hobbyists eager to explore geology and craftsmanship with trusted National Geographic quality.





| ASIN | B07XM95HZY |
| Age Range Description | 8 years and up |
| Best Sellers Rank | #38,878 in Toys & Games ( See Top 100 in Toys & Games ) #15 in Kids' Rock Tumblers #406 in Educational Science Kits |
| Brand Name | Blue Marble |
| Color | Multicolor |
| Customer Reviews | 4.6 out of 5 stars 1,955 Reviews |
| Educational Objective | Learning Education STEM Toys |
| Global Trade Identification Number | 00816448027178 |
| Included Components | 2 Pounds Gemstone Mix, 1 Pound Agate Mix, 1 Pound Madagascar Mix, 1 Pound Jasper Mix, 5 Jewelry Settings, 20 Rock Polishing Grit Packets, 1 Learning Guide with Instructions |
| Item Dimensions | 6.9 x 6.1 x 5.9 inches |
| Item Height | 5.9 inches |
| Item Type Name | 5 Pound Mix of Rocks and Gemstones for Rock Tumblers |
| Item Weight | 6.51 Pounds |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer Maximum Age (MONTHS) | 1188.0 |
| Manufacturer Minimum Age (MONTHS) | 96.00 |
| Manufacturer Warranty Description | National Geographic Toys is proud to provide a 100% satisfaction with all our products so that you can buy with confidence. |
| Material Type | Assorted Rocks & Gemstones |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | Manual replacement |
| Size | Medium, Small |
| Sub Brand | National Geographic |
| Subject Character | Indigo |
| Supported Battery Types | No batteries required |
| UPC | 816448027178 |
D**R
Not my first purchase and not my last, love their products!!!
I recently purchased the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit from Amazon, and I must say that I am thoroughly impressed with the quality and variety it offers. The kit includes 5 pounds of unpolished rocks and gemstones, which provides an enormous variety for tumbling. The rocks are of excellent quality and come in different shapes, sizes, and colors, making the tumbling process exciting and educational. The rock tumbler grit and polish refill that comes with the kit is exceptional. It effectively smooths and polishes the rocks, giving them a beautiful shine. The included instructions are clear and easy to follow, making the tumbling process a breeze, even for beginners. What I appreciate most about this kit is the value for money. The amount of rocks and gemstones provided is generous, ensuring that I have a continuous supply for multiple tumbling sessions. The quality of the rocks and the effectiveness of the grit and polish make this kit worth every penny. Overall, the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit has exceeded my expectations. It offers a wide range of rocks and gemstones, excellent grit and polish, and is a great investment for anyone interested in the art of rock tumbling. I highly recommend this kit to both beginners and experienced tumblers alike.
X**S
Must have
Great product
E**8
great
just what we needed for the Christmas holiday
K**M
Good
Child loved it
K**E
The kids loved these.
Purchased for my daughter (14)and niece(6). They absolutely loved them. Great value, easy-to-use and ready to go for tumbling. Fun for kids and adults. We have a harbor fright double barrel tumbler and we have both barrels going at the moment. I've herd the grit isn't the best, but we gonna give it a try. I will do an update on the grit in a month-ish when we make it through all 4 stages.
J**E
Good assortment
Nice assortment of stones. Easy to use directions and supplies.
C**R
Lots of tumbling rocks
Lots of rocks Good sizes some small but most are acceptable
B**.
Great gift set
This box includes 5 different 1lb bags of rock to tumble. There is a nice variety in the different kinds, and it also includes all of the grit required for each bag.
Trustpilot
1 day ago
1 month ago