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🪨 Transform Rough Rocks into Polished Masterpieces—Because Your Collection Deserves the Best!
National Geographic’s 1.49kg Rock Tumbler Grit is a premium silicon carbide polishing media designed for all rock tumblers. Featuring a precise 4-stage grit system, it shapes, smooths, pre-polishes, and delivers a dazzling final polish to up to 9kg of rocks, gems, and glass. Packaged for easy measuring and storage, this kit is perfect for hobbyists and STEM enthusiasts seeking professional-quality results with every tumble.
| ASIN | B01MRKI4W0 |
| Age Range Description | 8 years and up |
| Best Sellers Rank | 44,391 in Toys & Games ( See Top 100 in Toys & Games ) 495 in Educational Science Kits |
| Brand Name | Blue Marble |
| Colour | Black |
| Customer Reviews | 4.6 out of 5 stars 14,806 Reviews |
| Educational Objective | Promote geological knowledge and provide practical learning experiences related to rocks and minerals |
| Global Trade Identification Number | 00816448020636 |
| Included Components | 10 mL Grit Scoop, 4 Stages of Rock Polishing Grit, Rock Tumbling Instructions |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required | No |
| Item Dimensions | 14 x 14 x 10.8 centimetres |
| Item Type Name | Rock Tumbler Grit - Rock Polishing Grit Media |
| Item Weight | 1.78 Kilograms |
| Manufacturer | National Geographic |
| Manufacturer Part Number | NGBULKGRIT |
| Manufacturer Warranty Description | We're proud to make the highest quality products which are backed by exceptional service. |
| Material Type | Carbide of Silicon |
| Maximum Age Recommendation | 1188.00 |
| Minimum Age Recommendation | 96.00 |
| Model Number | NGBULKGRIT |
| Number of Players | 1 |
| Operation Mode | Manual |
| Set Name | Stone Bite Set |
| Size | M |
| Sub Brand | National Geographic |
| Supported Battery Types | No batteries required |
| Theme | Science |
| UPC | 816448020636 |
| Unit Count | 1.0 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.
K**M
Perfect size for the rock tumbler!
Exactly what I needed, more grit for my tumbler! I recently got some of my own beach rocks; quartz and serpentine, possibly some granite, and I needed these to tumble away! Good size, easy to use, functions as it should, measuring spoon and instructions made it easy to use. Think this is probably fun for kids, but definitely is for adults!
A**R
Rock tumbler
Ideal hobby rock tumbler
D**E
Rock polishing supplies
Bought for my son to replenish his rock polishing supplies. Has everything you need at a good quality. You will likely get some of this cheaper elsewhere, but stuck to the branded stuff. Good size of kit that should last a while.
B**S
Tumbler media
Brilliant for the Rock Tumbler
L**S
Works
Handy tubs & spoon Work well all labelled & numbered
R**T
Good product
Really satisfied with the product. I'm still learning but for now it's doing fine.
C**T
Perfect!
Perfect for a rock tumbler machine.
F**M
Helps Poshing
It helps shaping stones too..it is a little sound and I'm living 2floor so I put a box on it to make the noise more silent
M**E
Passt und erfüllt seinen Zweck
Passt und erfüllt seinen Zweck
A**R
tut, was es soll
die Größe ist ok, es reicht für einige Durchgänge in der Steinetrommel
L**S
Tutto ok
Un buon prodotto
H**.
Ich schleife Steine und da gibt es nichts Besseres
Zum Testen habe ich mir erstmal NATIONAL GEOGRAPHIC Schleif- & Poliermittel Nachfüllset gekauft. Die Lieferung kam wie gewohnt Pünktlich und sauber an. so habe ich auch gleich eine Ladung mit Steinen in die Trommel getan und wie Beschrieben das grobe Poliermittel zuerst in die Trommel gepackt. nach 3 Wochen habe ich das Schleifmittel gewechselt. schon nach den 3 Wochen war ich begeistert wie gut meine Steine Geschliffen worden sind. Ich werde mir sicher wieder hier was Bestellen.
Trustpilot
3 days ago
1 month ago