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✨ Transform ordinary rocks into dazzling gems — polish like a pro! 🪨
The National Geographic Rock Tumbler Media Kit is a comprehensive 4-stage polishing system featuring high-quality silicon carbide grit, 3 pounds of authentic Madagascar rocks, and 1.5 pounds of ceramic media to enhance tumbling efficiency and reduce noise. Its innovative GemFoam polishing media delivers an unmatched shine, making it ideal for both beginners and seasoned rock enthusiasts. Developed by award-winning Blue Marble and supported by National Geographic, this kit combines STEM education with hands-on creativity for a premium rock tumbling experience.
| ASIN | B08B7JBVG9 |
| Age Range Description | Kid |
| Battery Types | No batteries required |
| Brand | Blue Marble |
| Colour | Multicolor |
| Customer Reviews | 4.6 out of 5 stars 892 Reviews |
| Educational Objective | STEM |
| Global Trade Identification Number | 00816448027505 |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required | No |
| Item Dimensions | 25 x 18 x 14 Centimeters |
| Item Weight | 1.36 kg |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer Part Number | NGFOMCERGRTMD |
| Manufacturer recommended age | 8 years and up |
| Material | Rocks, Silicon Carbide, Ceramic, GemFoam, Metal |
| Model Number | NGFOMCERGRTMD |
| Operation Mode | Manual |
| Set Name | Mega Rock Media Kit |
| Size | One Size |
| Sub Brand | National Geographic |
| Theme | Rock Tumbling |
| UPC | 816448027505 |
| Unit Count | 1 Count |
S**E
Perfect Refill Set
Perfect refill pack. More than enough quality materials to keep us tumbling rocks for many, many months. Great value and includes instructions, which was very handy as we misplaced the ones that came with the tumbler itself.
A**A
Consigue el brillo de las piedras
Tras 28 días (7 días por step) y 3 días con GemFoam, conseguí que mis piedras brillasen y estuviesen lisas. La verdad es que no obtuve estos resultados a la primera, es un proceso lento, pero gracias a informarme y a prueba-fallo, conseguí que quedasen bien. Y el GemFoam posiblemente ha sido el causante del brillo.
A**N
A good kit.
Everything needed in it plus a bag of stones.Delivered promptly.Very good purchase.
K**N
All the kit is very nice.
Very good grit, and the foam actually works for the fifth step. I was pleasantly surprised.
H**M
Great for price
I keep mine in my garage, so I honestly don't know how loud it would be keeping it in the house... But what I can say is, this rock tumbler is so great! It has settings and timers so I can make great smallish sets of my rocks I always go hunting for. I will say, do your research on what rocks to put together and what grit to start with them because not all rocks/crystals are as dense as some. So if you do that and order more grit/filler, you got yourself a damn good tumbler for (to me) Small to medium loads of stocks and crystals 💖
Trustpilot
2 months ago
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