Free Shipping | 30-Day Returns
Free Shipping | 30-Day Returns
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Free Ground Shipping in the USA

30-Day Return Policy/No Restocking Fees

Customer Support is always available!

      Email: support@thegemstonelab.com

      Phone: 1-855-487-9637

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Covington Engineering Silicon Carbide Grit
Precision Grit for Lapidary Excellence

Whether you're shaping stones in your tumbler or putting the final polish on your latest masterpiece, Covington Engineering Silicon Carbide Grit delivers the consistent cutting power you need at every stage. Trusted by lapidary professionals and hobbyists alike, this premium abrasive is ideal for tumbling, grinding, and sanding hard stones, including agate, jasper, quartz, and more.

Available in a full range of grits—from aggressive 60 coarse for rapid shaping to fine 600 grit for smooth pre-polishing—Covington grit ensures each step in your process is clean, efficient, and reliable.

Why You'll Love It:

  • 💎 Versatile Grit Range – From 60 to 600, perfect for every stage of stone work

  • ⚙️ Fast, Consistent Cutting – Sharp-edged particles for efficient material removal

  • 🔧 High-Quality Abrasive – Sourced for durability and uniform breakdown

  • 🌀 Ideal for Tumblers & Flat Laps – Works great in rotary and vibratory tumblers, sanding units, and flat laps

Whether you're tumbling for a high-gloss finish or prepping slabs for cabbing, Covington Silicon Carbide Grit helps you get the results you're after—every time.

Shipping Information

Free Ground Shipping in the continental USA.

At the Gemstone Lab, we aim to deliver your lapidary tools and supplies quickly and safely.

That's why we only ship using UPS, FedEx, or USPS.

We offer free ground shipping on all orders within the United States. No minimum purchase is required -  every order qualifies! Our ground shipping is handled by trusted carriers to ensure your items arrive safely and on time.

What to Expect When You Place an Order

Once your order is confirmed, you'll receive a confirmation email detailing your purchase and order number. As soon as your order is shipped, you wlll receive a notification with all shipping details and a tracking number so you'll know exactly when your package will arrive. 

Fast Order Processing

We start processing your order right away. Most orders ship withing 1-2 business days, so you can get started on your next project before you know it. 

Shipping Times

Delivery times vary based on your location. Most U. S. order arrive within 3-6 business days. Expedited shipping options are also available at checkout for certain items for an additinal fee if you needs a product sooner. Made to order products cannot be guaranteed withing this timeframe are is noted on each product page. 

International Shipping

We currently do not offer shipping outside of the United States.

Secure Packaging

Every order is carefully packed to ensure your items arrive in perfect condition. Fragile tools, blades, and other delicate lapidary items are given extra care during packaging and boxing to prevent damage in transit.

 

If you have any question about our shipping policies or need assistance with a product, please don't hesitate to reach out to our friendly customer support team. We're happy to help make your lapidary adventure more fun in any way we can! Give us a call at 855-487-9637.