Dia-Sharp® Models
If you need to maintain small edges or pointed tools, or portability or space is of concern, DMT® offers 3-in. and 4-in. continuous diamond surface stones!
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Dia-Sharp® Credit Card Sharpener

Take your sharpening anywhere with the ready-to-go Dia-Sharp® credit card sized diamond sharpener. Fits easily in pocket or wallet. Comes in convenient vinyl color-coded carry case. Offered in coarse, fine and extra-fine diamond grits.
(Models: D3C, D3F, D3E, D3EFC)
Size: 3.25"x 2" x .05" (83 mm x 51 mm x 1 mm)
Buy Now in the DMT® StoreAvailable Grits:
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BLUE (C) Diamond - Coarse
BLUE (C) Diamond - Coarse
Quickly sharpen a neglected edge (325 mesh, 45 micron) -
RED (F) Diamond - Fine
RED (F) Diamond - Fine
Put a keen edge on a maintained tool (600 mesh, 25 micron) -
GREEN (E) Diamond - Extra Fine
GREEN (E) Diamond - Extra Fine
Sharpen to a razor edge (1200 mesh, 9 micron)
Surface:
Continuous Diamond [?] -
BLUE (C) Diamond - Coarse
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Dia-Sharp® 4” Model

The Dia-Sharp® 4" continuous diamond sharpening stone delivers full-size sharpening while maximizing work and storage space. Perfectly suited for small contact area and pointed tools. Available in coarse, fine and extra-fine diamond grits; grit clearly marked on side of stone. Sharpening with diamonds is fast and easy. No messy oils needed—sharpen dry or with water.
(Models: D4C, D4F, D4E)
Size: 4" x .875" x .1875" (102 mm x 22 mm x 5 mm)
Buy Now in the DMT® StoreAvailable Grits:
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BLUE (C) Diamond - Coarse
BLUE (C) Diamond - Coarse
Quickly sharpen a neglected edge (325 mesh, 45 micron) -
RED (F) Diamond - Fine
RED (F) Diamond - Fine
Put a keen edge on a maintained tool (600 mesh, 25 micron) -
GREEN (E) Diamond - Extra Fine
GREEN (E) Diamond - Extra Fine
Sharpen to a razor edge (1200 mesh, 9 micron)
Surface:
Continuous Diamond [?] -
BLUE (C) Diamond - Coarse