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SHARPAL 168H Large 8" x 3" Dual-Grit Diamond

By SHARPAL · Knife Sharpening · Kitchen & Cooking

  • Coarse 325 grit (45 micron) diamond surface
  • Extra Fine 1000 grit (15 micron) diamond surface
  • 8 x 3 inch (203 x 76 mm) sharpening surface
  • MirrorFlat precision-ground flatness ±0.002 inch (0.05 mm)
  • Angle Pyramid guide with 14, 17, 20, 25 degree angles

Lowest price seen
$45.00
from $45.00 at Chef Knives To Go · Checked Oct 12, 2026

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Summary

A large dual-sided diamond sharpening stone for hand-sharpening kitchen and pocket knives, with a coarse 325-grit face and an extra-fine 1000-grit face.

Strengths

  • Large 8 × 3 in surface for the money.
  • The diamond surface needs no flattening, unlike a water stone.
  • 3-year warranty, longer than many competitors offer.
  • Angle Pyramid guide covers four fixed angles out of the box.
  • One owner tested it on six knives and reported strong value.
  • Works dry or with honing oil, so there is no water-stone routine.

Weaknesses

  • Ships without a storage case; the optional 160H base is sold separately.
  • No independent instrumented test exists, so the specs are unverified by a lab.
  • Diamond plating wear is the eventual failure mode, and no lifespan data exists.
  • Using water is ruled out, which breaks the usual water-stone habit.
  • Thin owner coverage means the absence of complaints is not proof of reliability.

Verified specifications

Model168H.
Surfacemonocrystalline diamond, electroplated onto a metal plate.
Coarse face325 grit (45 micron).
Extra-fine face1000 grit (15 micron).
Dimensions8 × 3 × 0.55 in (203 × 76 × 14 mm).
FlatnessMirrorFlat precision-ground to ±0.002 in (0.05 mm).
Weight1.37 lbs (0.62 kg).
Angle guideAngle Pyramid with four fixed angles of 14, 17, 20 and 25 degrees.
Usedry or with honing oil; do not use water.
In the boxAngle Pyramid guide and non-slip pad; no storage case.
Flatteningnot required; the diamond surface does not need lapping.
UPC814744020992.
Full research notes and sources

Sharpening routine and upkeep

Use the stone dry or with honing oil; do not use water on it. Wipe the surface clean after use and clear off metal particles before putting it away. The diamond surface does not need flattening or lapping, so there is no flattening plate to buy. Diamond plating wear is the eventual failure mode, but no expected plating life has been published. An optional 160H storage base fits the stone, and the 162N case will hold it if you place the anti-slip pad on top.

What owners report

One r/sharpening owner tested the 168H on six knives, a mix of high carbon and stainless, and called the stone “unreal” with “incredible” value for money. Coverage is thin, so read the silence as limited data rather than a reliability guarantee.

Is it worth it?

Sharpal’s own store lists the 168H at $44.99 (2026) and Chef Knives To Go lists it at $45.00 (2026). Under $50 it is a solid value: a large surface, no flattening upkeep and a 3-year warranty. From $51-65 it is fair, and worth comparing against other 8 × 3 in diamond plates. Above $65 the value weakens, and stones with longer track records become the safer pick unless you specifically want this ecosystem.

Which model this is

This is the 168H, the 325/1000 grit variant without a storage case, UPC 814744020992. Don’t confuse it with the 169H (220/600), the 163N (220/600) or the 162N (325/1200), which share the form factor but not the grits.

The Amazon listing is ASIN B0F9Y73NXL.

Sources

Manufacturer:

Independent reviews:

Owner reports:

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