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Three different grades of grit for lapping in lapidary on a white background

Covington Lapping Grit Kit

by Covington Engineering
$29.99
Weight

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Covington Lapping Grit Kit – 3 Grits for Precision Grinding

Achieve smoother surfaces and faster results with this essential 3-grit lapping kit.

Whether you're flattening slabs, preparing stones for polishing, or refining cabochon backs, the Covington Lapping Grit Kit delivers consistent, reliable performance with every grind. 

What's Included:

  • 60/90 Grit – A coarse blend for fast material removal and initial shaping

  • 120/220 Grit – Medium grit to refine the surface and remove deep scratches

  • 400 Grit – Fine grit for smoothing and preparing for pre-polish

Why It Matters:

  • Progressive Grit Sequence
    Move seamlessly from coarse to fine without needing to source grits separately. This allows for better control, faster workflow, and fewer mistakes in your lapidary projects.

  • Reliable Particle Consistency
    Each grit is uniformly sized and graded, ensuring even material removal across your surface. The result? A flatter, smoother finish that sets the stage for a stunning polish.

  • Optimized for Lap Plates
    Designed specifically for use on lapping machines and flat laps, this kit minimizes mess and maximizes efficiency, letting you focus on craftsmanship rather than cleanup or troubleshooting.

Whether you're a beginner refining your skills or a seasoned pro maintaining high standards, the Covington Lapping Grit Kit gives you the foundation for beautiful, professional results—right from the first grind.

Let customers speak for us

from 23 reviews
Covington Ceramic Media 3/8" diameter
Anonymous
Works

Works ok

Covington Ceramic Media 3/8" diameter
Raytech Ceramalite Tumbling Media 5/8" V-Cut Cylinders
Anonymous
Good

Good filler

Raytech Ceramalite Tumbling Media 5/8" V-Cut Cylinders
sharon b.
Shopping was easy and fast

Shopping was easy and fast. Also the cabbing machine arrived quickly and packaged very well. My husband unpacked it and made sure it ran. He did discover a cracked tray and called customer service. It was corrected very quickly with a replacement. Great company to do business with.

The Gemstone Lab
CabKing 6 Cabbing Machine
sharon b.
This was a gift for my husband

This was a gift for my husband. It arrived on time and packaged very well. He did plug it in and ran it. Although he has not polished anything as of yet.

CabKing 6 Cabbing Machine
James J.
Great place to make purchases

Very easy to navigate their website - prices are good - response and delivery time is great and they follow up with you; the Gemstone Lab is an awesome resource

The Gemstone Lab
Raytech Tumble-Vibe TV-10 Vibratory Tumbler
Stephen B.
Everything arrived in good shape and delivery was smooth

Everything arrived in good shape and delivery was smooth. Haven't gotten started yet with the tumbler so can't tell you about how it works. The instructions didn't tell me how to attach the bowl to the base! Had to learn that from a You-Tube video! Haven't plugged it in yet.

Raytech Tumble-Vibe TV-10 Vibratory Tumbler
Covington Silicon Carbide Graded Abrasive Grit - Various Sizes
Clarence S.
Good

Good product

Covington Silicon Carbide Graded Abrasive Grit - Various Sizes
John
Great Store

Web site is easy to navigate and the customer service is great. Very fast shipping also.

The Gemstone Lab
Hi-Tech Diamond 10 Slab Saw
John
Great saw

Easy to put together and change blades. Light enough to move with ease. Cuts really well.

Hi-Tech Diamond 10 Slab Saw
Lortone 3A Rock Tumbler
Todd H.

so far so good!

Lortone 3A Rock Tumbler
Lortone 3A Rock Tumbler
Jackie S.

Tumbler was put to work immediately.

Lortone 3A Rock Tumbler
Fred K.
Nice!

very quick shipping. Nice product.

The Gemstone Lab
Inland Craft Dop Station 115V
Fred K.
super!

Super! It heated up quickly and kept the wax at a perfect temp.

Inland Craft Dop Station 115V
Raytech Tumble-Vibe TV-10 Vibratory Tumbler
Pat G.
RayTech Vibe 10

I’m very pleased with my RayTech Vibe 10!. You did help with speaking to the rep of RayTech to expedite the tumbler which was out of stock.
Thank you Craig,
Pat

Raytech Tumble-Vibe TV-10 Vibratory Tumbler
Mike C.
Gemstone labs

I had a great experience working with Craig. I needed to change my order and they were already aware of my mistake with the saw size. Everything was so easy and smooth.

The Gemstone Lab

Customer Reviews

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Customers rate us 4.7/5 based on 23 reviews.

Covington Lapping Grit Kit – 3 Grits for Precision Grinding

Achieve smoother surfaces and faster results with this essential 3-grit lapping kit.

Whether you're flattening slabs, preparing stones for polishing, or refining cabochon backs, the Covington Lapping Grit Kit delivers consistent, reliable performance with every grind. 

What's Included:

  • 60/90 Grit – A coarse blend for fast material removal and initial shaping

  • 120/220 Grit – Medium grit to refine the surface and remove deep scratches

  • 400 Grit – Fine grit for smoothing and preparing for pre-polish

Why It Matters:

  • Progressive Grit Sequence
    Move seamlessly from coarse to fine without needing to source grits separately. This allows for better control, faster workflow, and fewer mistakes in your lapidary projects.

  • Reliable Particle Consistency
    Each grit is uniformly sized and graded, ensuring even material removal across your surface. The result? A flatter, smoother finish that sets the stage for a stunning polish.

  • Optimized for Lap Plates
    Designed specifically for use on lapping machines and flat laps, this kit minimizes mess and maximizes efficiency, letting you focus on craftsmanship rather than cleanup or troubleshooting.

Whether you're a beginner refining your skills or a seasoned pro maintaining high standards, the Covington Lapping Grit Kit gives you the foundation for beautiful, professional results—right from the first grind.

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.