How many oz is in each container?

1 Coarse-16oz. 2 Medium-13oz. 3 Pre-polish-12oz. 4 Polish-11.5 oz.

I just opened this and finished with grit one, went to put grit 2 in and bottle open and 1/2 full. How do I contact seller?

I would go through Amazon to get an answer for your problem.

Can it be used together ?

Each grit is a different fineness intended for a specific purpose. We do not recommend using them at the same time. We do recommend 1 TBS grit per per 1 LB rocks, at each cycle. For further information please contact us at help@natgeotoys.com.

After each step for the rocks in the kit, my rocks dry with a dull white finish. It doesn't show when it is wet. Am I doing something wrong?

No. I find that after tumbling with the finest grit after the last step... and thoroughly allowing the rocks to dry, a nice coat of wax or oil brings out the color beautifully.

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NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit - Rock Tumbling Supplies including Grit and Polish Refills, Ceramic Media, GemFoam, 1.36 kg Madagascar Rocks for Tumbling, Jewellery Accessories

Product ID: 319966455

Details

Brand
Blue Marble
Colour
Multicolor
Special feature
GemFoam
Style
Complete Kit
Theme
Gemstone Media

✨Complete grit & polish refill kit

🪨Ceramic media for flawless polishing

⚙️1.36 kg premium Madagascar rocks

$159.56

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Description

🪨✨ Polish Your Passion, Rock Your World!

ALL IN ONE REFILL KIT - Includes grit, polish, ceramic media, and Madagascar rocks—everything you need to keep your rock tumbler running smoothly.
BOOST CREATIVITY PATIENCE - Perfect for mindful crafting, enhancing fine motor skills and focus—ideal for the modern multitasker.
ECO FRIENDLY LOW MAINTENANCE - No batteries required and easy hand wash care for sustainable, hassle-free use.
TRANSFORM ROUGH ROCKS INTO GEMS - Experience the magic of turning raw stones into dazzling treasures with professional-grade tumbling supplies.
TRUSTED BY EXPLORERS CREATORS - From National Geographic, a brand synonymous with discovery and quality—join a community of passionate hobbyists.

The NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit offers a 1.36 kg set of premium Madagascar rocks, ceramic media, grit, and polish refills designed to transform rough stones into polished gems. Suitable for ages 8 and up under adult supervision, this all-in-one kit supports creative hobbies and fine motor skill development without the need for batteries or complex assembly.

Specifications

Product Dimensions	25 x 18 x 14 cm; 1.36 kg
Manufacturer recommended age	8 years and up
Item model number	NGFOMCERGRTMD
Educational Objective(s)	Develops fine motor skills, patience and following instructions
Language:	English
Number of Game Players	1
Number of pieces	1
Assembly Required	No
Batteries Required?	No
Batteries included?	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Ceramic
Material Care Instructions	Hand Wash Only
Remote Control Included?	No
Radio Control Suitability	Rock Tumbling Media for Polishing Rough Gemstones and Rocks
Colour	Multicolor
Release date	15 Jun. 2020
ASIN	B08B7JBVG9

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$159.56

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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