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4.5 (123)

Rob Cosman's Diamond Stone: Premium

Name: RobCosman.com Rob Cosman's Diamond Stone: Premium - Rob Cosman's Diamond Stone: Premium
Brand: RobCosman.com
SKU: 42135044358322
Price: 149.0 USD
Availability: InStock
Rating: 4.9118 (33 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$149.00

Purchase at RobCosman.com

Color

Black

Quantity

I recommend and use 300 / 1000 grit, double-sided, diamond stones as an essential part of my tool sharpening method. Our diamond stones use only high quality mono-crystalline man-made industrial diamonds permanently adhered by electroplati...

Reviews

4.9

34 ratings

Just like Rob said...

The system which includes this diamond stone works just like Rob said it would. Very satisfied!

Randy · 2 days ago

Spectacular diamond stone that is perfect for keeping a flat and true surface on the Shapton sharpening stones I purchased. As with everything else I’ve gotten from their store, its top notch!

AJD3 · May 2, 2026

Fantastic tool

I have tried a few diamond stones since getting into woodworking, and I always made the mistake of buying the "bargain deal" on Amazon. Finally decided to get this one, and boy it blows away anything I've ever used before.

Kyle · April 13, 2026

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RobCosman.com

4.9 (6.2K)

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Reviews

4.9

34 ratings

Just like Rob said...

The system which includes this diamond stone works just like Rob said it would. Very satisfied!

Randy · 2 days ago

Spectacular diamond stone that is perfect for keeping a flat and true surface on the Shapton sharpening stones I purchased. As with everything else I’ve gotten from their store, its top notch!

AJD3 · May 2, 2026