Skip to content

👋Sign In or Create an Account

Welcome back! Please sign in to access your account and manage your orders. If you're new to our website, you can easily create an account to enjoy personalized features and faster checkout.

Skip to product information
1 of 6

NATIONAL GEOGRAPHIC Rock Tumbler Grit Refill Kit - Polish 20 lbs, Medium, Black, Model NGBULKGRIT, Silicone Tumbling Supplies

NATIONAL GEOGRAPHIC Rock Tumbler Grit Refill Kit - Polish 20 lbs, Medium, Black, Model NGBULKGRIT, Silicone Tumbling Supplies

Hurry! Only left 10 in stock

SKU: WBTOYB01MRKI4W0
UPC: '816448020636
Brand: National Geographic
Product Type: Science Kits & Toys
MPN: NGBULKGRIT
Regular price $32.55 USD
Sale price $32.55 USD Regular price $46.50 USD
SAVE 30%
Shipping calculated at checkout.

Sold by Toytooth, an authorized reseller.

Sold by ToyTooth — Your trusted kids' toy store.

Returns accepted within 30 days  |  support@toytooth.com

✓ Verified
Shipping Information
  • Free Standard Shipping — United States only
  • Processing Time: 1–3 business days
  • Estimated Delivery: 3–5 business days after dispatch
  • Securely packed to ensure your purchase arrives in perfect condition
  • Tracking number sent via email once dispatched
  • Orders over $250 require signature upon delivery. Taxes calculated at checkout.
Returns & Refund

Returns accepted within 30 days of delivery.

Damaged or Defective Item

Free return shipping + replacement or full refund

Wrong Item Received

Free return shipping + replacement or full refund

Change of Mind

Return shipping at customer's expense · Item must be unused & in original packaging

All returns require a Return Authorization (RA) number before sending.

To initiate a return, contact us:

support@toytooth.com +1 281-456-3686
View Full Return & Refund Policy
Safety & Compliance
⚠️

California Proposition 65 Warning

Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

www.P65Warnings.ca.gov
🛒

General Product Safety Advisory

Always read the product label, instructions, and safety warnings before use. Do not use damaged or modified products. Store products in appropriate conditions as specified by the manufacturer.

Keep all products out of reach of children unless specifically designed for their use.

ℹ️

Product Authenticity & Notice

All products sold by ToyTooth are 100% authentic, sourced directly from trusted toy suppliers and brands. Product colors and dimensions may vary slightly from images due to screen calibration and manufacturing tolerances.

ToyTooth — Fun Toys for Every Kid, Delivered to Your Door.

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Guarantee safe and secure checkout

View full details
Description

The National Geographic Rock Tumbler Grit Bulk Pack is an essential kit designed for rock tumbling enthusiasts. This comprehensive set includes everything needed to transform rough rocks into beautifully polished gemstones. Ideal for hobbyists and educators alike, this grit pack enables users to achieve professional-quality results at home.

This rock tumbling kit contains over 3 pounds of high-quality silicon carbide grit, specifically formulated for effective rock polishing. The four-stage grit system ensures a thorough and efficient tumbling process. Each stage is carefully engineered to progressively smooth and polish rocks, making it suitable for all types of tumblers. The included 10 mL scoop allows for precise measurements, ensuring optimal grit usage for up to 10 pounds of rocks.

Key Features:
  • High Quality Grit: Contains four stages of premium silicon carbide grit for optimal polishing results.
  • Versatile Compatibility: Works seamlessly with all rock tumblers, providing flexibility for users.
  • Easy Measurement: Each grit stage is packaged in wide-mouth containers with secure screw-top closures for easy access.
  • Clear Instructions: Includes comprehensive rock tumbling instructions to guide users through each polishing stage.
  • Generous Quantity: Enough grit to polish up to 20 pounds of rocks, gems, and glass, making it a cost-effective choice.
  • Educational Value: Supports hands-on learning and exploration for children and adults interested in geology.
  • Exceptional Support: Backed by National Geographic's commitment to quality service and customer satisfaction.

The National Geographic Rock Tumbler Grit Bulk Pack is perfect for individuals looking to explore the fascinating world of rock tumbling. Whether you are a novice or an experienced tumbler, this product is designed to enhance your rock polishing experience, making it an excellent addition to your crafting supplies. With its high-quality materials and detailed instructions, users can confidently create stunning polished stones while enjoying the educational benefits of this hands-on activity.

Frequently Asked Questions

  • Q: What materials is the National Geographic Rock Tumbler Grit made of? A: The grit is made of high-quality silicon carbide. It is designed for effective polishing of rocks and gemstones.
  • Q: What are the dimensions of the packaging for this rock tumbler grit? A: The packaging dimensions are five and a half inches in length, five and a half inches in width, and four and a quarter inches in height.
  • Q: How much grit is included in the National Geographic Rock Tumbler Grit refill kit? A: The kit contains over three pounds of rock polishing grit. This amount is sufficient for polishing up to twenty pounds of rocks.
  • Q: How do I use the National Geographic Rock Tumbler Grit? A: To use the grit, follow the four stages of rock polishing. Each stage uses a specific grit size for optimal rock shaping and polishing.
  • Q: Can I use this grit with any rock tumbler? A: Yes, this grit is compatible with all rock tumblers on the market. For best results, use it with National Geographic rock tumblers.
  • Q: How do I measure the grit for my rock tumbler? A: The kit includes a ten milliliter grit scoop for accurate measurements. This ensures you apply the correct amount of grit per stage.
  • Q: How should I store the National Geographic Rock Tumbler Grit? A: Store the grit in a cool, dry place. The containers have secure screw-top closures to keep the grit safe and prevent contamination.
  • Q: Is the National Geographic Rock Tumbler Grit safe to use? A: Yes, it is safe when used as directed. Always follow the provided instructions for safe handling and use.
  • Q: How do I clean my rock tumbler after using the grit? A: Clean your rock tumbler with warm water and mild soap. Ensure all grit residues are removed before using it again.
  • Q: What if my rocks do not polish properly? A: If your rocks do not polish, ensure you are using the correct grit for each stage. Review the instructions for any missed steps.
  • Q: Can I return the National Geographic Rock Tumbler Grit if I'm not satisfied? A: Yes, you can return the product if you are not satisfied. Check the return policy for specific guidelines and timeframes.
  • Q: Is there a warranty for the National Geographic Rock Tumbler Grit? A: There is no specific warranty for the grit itself, but National Geographic offers customer support for any issues.
  • Q: How long can I store the grit before using it? A: You can store the grit indefinitely as long as it remains sealed and dry. Check for any signs of moisture before use.
  • Q: Does this grit work better for certain types of rocks? A: This grit works effectively on various types of rocks, including gems and glass. It is versatile for different tumbling projects.
  • Q: What should I do if the package arrives damaged? A: If the package arrives damaged, contact customer support for assistance and possible replacement options.
  • Q: Can I mix different grits from other brands? A: It is not recommended to mix different grits from other brands. Stick to National Geographic grit for best results.
Home Shop
Wishlist
Log in
×