• Sharpening Articles
  • Sharpening Videos
Home / Shop by Brand / DMT / 8" Dia-Sharp Diamond Stone
DMT Dia-Sharp 8
Item #: D8
Price: $69.25 $55.99
  • 4 grits available (Extra Coarse, Coarse, Fine, Extra Fine)
  • Stone measures 8" x 3"
  • Continuous diamond surface on nickel coated solid steel

Our most popular individual diamond stones.

Versatile, flat, continuous surface stones

The Dia-Sharp® line of DMT® diamond stones feature a continuous diamond surface embedded on a sturdy nickel coated steel base. A continuous surface diamond stone is preferred when sharpening small or pointed tools that can get caught in the interrupted surface of other DMT stones, or where other stones can get gouged by the pointed tips. The surface of the Dia-Sharp stones are precision ground to be very flat, and are some of the easiest and most versatile stones available.

Dia-Sharp diamond stones measure 8" long and 3" wide. The size is plenty large for most tools and knives. Includes four rubber feet to keep the stone in place during sharpening.

Available in Extra Coarse, Coarse, Fine, and Extra Fine.

DMT stones are made in the USA

Choose from 4 grits

When purchasing a DMT Dia-Sharp stone, you must choose a grit in the selection box found above. The stones are available in all of the standard DMT grits (Extra Coarse, Coarse, Fine, Extra Fine). When used together, these grits can turn a very dull edge into a truly sharp edge.

  • D8X - Extra Coarse Grit (220 grit) for fast sharpening of very dull edges.
  • D8C - Coarse Grit (325 grit) for sharpening of dull edges or to refine after using the extra coarse.
  • D8F - Fine Grit (600 grit) for refining coarsely sharpened edges or sharpening only moderately dull edges.
  • D8E - Extra Fine Grit (1200 grit) for putting a very fine edge on a nearly sharp tool.
  • Purchase all 4 grits and save. D8 Dia-Sharp Diamond Kit

Other grits available for specific uses

The 8" Dia-Sharp stones are also available in specialty grits other than the standard four listed above. Prices for these other grits will vary.

  • D8XX - Extra Extra Coarse Grit (120 grit) for extremely fast metal removal.
  • D8ME - Medium Extra Fine Grit (4000 grit) for finishing a very fine edge.
  • D8EE - Extra Extra Fine Grit (8000 grit) for the finest possible diamond stone edge.


Optional Stone Holder

  • Raises the stone off the work surface to make knife sharpening easier
  • No-slip rubber feet keep stone in place during sharpening
  • Adjusts to fit a wide variety of stones (6.5" to 8.5" wide) including the stone sold above

DMT Color Coded System Key

Q. Are the grits on the Dia-Sharp stones the same as on the color coded DMT stones?

A. Yes. The Extra Coarse corresponds to the Black, the Coarse to the Blue, the Fine to the Red and the Extra Fine to the Green on the color coded stones.

For other frequently asked questions, see our list of DMT and Diamond Stone FAQs.

Additional Categories

I recently placed my first order after finding you on the web while looking for grinding wheels. I am a customer for life. Here's why. My first order was a simple white grinding wheel for a "normal joe's shop". When I received the wrong wheel (150 grit instead of the ordered 100 grit) I called and without hesitation or the 3rd degree another wheel was sent off. No questioning of my integrity, intelligence or honor. Simply "I am sorry, we'll send the correct wheel off immediately..." The right thing was done by a neat guy. I was treated like an adult. Unbelievable in this day and age...proper...and priceless. Price, performance, responsiveness and customer service par excel-lance. 6-Stars! All my sharpening orders, albeit small shop orders, will now be with you. Promote you I will.
Greg T, Iowa