Can Gemfoam be purchased separately?

Yes, we do sell the Polishing Foam separately.

What is the difference between this and product # ngbulkgrit?

Thank you so much for your inquiry. This item (the Complete Media Kit) contains the grit along with GemFoam to assist in the polishing stage and Ceramic Pellets to reduce rock breakage along with making the tumbling process more quiet. The Bulk Grit does not contain the GemFoam or pellets, but does contain the grit.

How much of each medium is included in this accessories set?

The jars shown hold approximately 2/3 of a cup, so plan on buying bulk bags in the near future.

My lid cracked and i need a new one. Are there replacement parts avaliable to buy?

Not sure if you are referring to the tumbler canister lid but you will find replacement parts on Ebay under rock tumbler parts

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Description

💎 Turn ordinary stones into extraordinary gems—shine like never before!

CERAMIC MEDIA MAGIC - Quiet your tumbler and protect your stones with 1.5 lbs of noise-dampening, breakage-reducing ceramic pellets.
GEM FOAM SHINE BOOSTER - Add the patent-pending GemFoam for a dazzling, museum-quality polish that turns rocks into conversation starters.
UNIVERSAL COMPATIBILITY - Designed to elevate any rock tumbler’s performance—perfect for pros and hobbyists alike.
PRECISION 4 STAGE GRIT SYSTEM - From rough to radiant—engineered silicon carbide grit sculpts and polishes with expert finesse.
STEM APPROVED EDUCATIONAL KIT - Hands-on science meets stunning results—ideal for curious minds aged 8+ aiming to master geology and chemistry.

The Blue Marble National Geographic Rock Tumbler Media kit includes a complete 4-stage silicon carbide grit system, 1.5 pounds of ceramic pellets to reduce noise and rock breakage, and the innovative GemFoam polishing media for superior shine. Compatible with all rock tumblers, this STEM-focused kit offers precise measuring tools and secure storage, delivering professional-grade polishing results for hobbyists and educators alike.

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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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₱14550

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Educational Objective(s)	STEM
Model Number	NGFOMCERGRIT
Number of Game Players	1
Assembly Required	No
Batteries Required	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Glass,Gems
Remote Control Included?	No
Colour	Black
Product Dimensions	19 x 13.49 x 14 cm; 2.52 kg
Item model number	NGFOMCERGRIT
Manufacturer recommended age	8 years and up
Manufacturer	JMW Sales, Inc.
Item Weight	2 kg 520 g

Blue Marble National Geographic Rock Tumbler Media – The Ultimate Rock Polishing Supplies Kit, 4 Stage Bulk Grit, 1.5 Pounds of Ceramic Pellets, GemFoam Polishing Tumbling Media

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