






💎 Sharpen smarter, not harder — the diamond edge advantage awaits!
The S SATC Diamond Sharpening Stone features a durable 8-inch steel plate electroplated with monocrystalline diamonds on dual 400/1200 grit sides, offering fast, precise sharpening for a wide range of straight-edged tools. Its solid construction and superior flatness provide consistent, long-lasting performance, making it a top choice for both professionals and sharpening enthusiasts seeking efficiency and reliability.



















| Best Sellers Rank | #9,718 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Sharpening Stones |
| Brand | S SATC |
| Color | White |
| Customer Reviews | 4.5 out of 5 stars 2,225 Reviews |
| Grit Type | Coarse |
| Material | Steel |
| Number of Items | 1 |
| Product Dimensions | 9.05"L x 2.75"W x 0.3"H |
A**R
Excellent Diamond Sharpening Stone. Great for expensive knives
I’ve tried traditional whetstones in the past and never had great results, so I was hesitant to experiment again, especially since I own expensive knives and didn’t want to risk damaging them. I also avoided cheaper sharpening tools for the same reason. This diamond sharpening stone worked extremely well. It sharpened my knives quickly and evenly, and I was able to get a very sharp edge without any damage to the blade. The surface feels consistent and effective, and it performs much better than the whetstones I’ve used before. It’s easy to use with a little practice, even if you’re not a professional. Overall, this is a solid option if you want reliable results and care about protecting higher-quality knives. Pros: Sharpens quickly and evenly Safe for expensive, high-quality knives More effective than traditional whetstones Durable surface Cons: Requires some learning Does not come with a base to keep it in place
M**E
Outstanding Diamond Bench Stone for Performance, Longevity, and Learning
I’m a huge fan of S SATC diamond bench stones, and this 400/1000 grit double-sided plate continues to deliver excellent value and performance. Like most budget-friendly diamond stones, there is a small amount of lower-grit contamination out of the box, but it’s not excessive and becomes far less noticeable after a short break-in period. Once broken in, these stones settle down nicely and perform very close to their rated grit for consistent, predictable sharpening. What really stands out is durability. My original S SATC stones are approaching two years of regular use, with close to 300 knives sharpened so far, and they still have plenty of life left. The cutting speed remains strong, which is exactly why I always recommend diamond stones like these to new sharpeners. Diamonds cut fast and provide immediate feedback, making it much easier to learn how to hold a consistent angle, raise a burr, apex the edge, refine it properly, and then finish with stropping. Compared to water stones or natural stones—which cut much slower and offer delayed feedback—diamond plates dramatically shorten the learning curve. That faster feedback helps beginners understand what’s happening at the edge in real time instead of guessing. Inexpensive, effective, and long-lasting, this stone is an easy recommendation for beginners and experienced sharpeners alike.
A**R
Decent, but I would spend more and get something nicer
This is a good product for the price but I would spend a little more and get something nicer. The coarse grind is fine but fine grind side is not. This will work for basic sharpening, but if you want to get something razor sharp you're going to need to spend a little more money.
N**K
Heavy, solid, and pretty flat; way better than I expected for the price.
This is for the 150/600 plate; I got it to flatten the backs of some plane irons and chisels. I fully expected this to be a couple of thin plates stuck with spray adhesive to a piece of 3/8" aluminum plate or something similar, and hey, that was going to be totally fine. It's $23. Instead, it appears to be a solid chunk of 8" x 2.75" x 3/8" steel, machined as flat as I need it to be (again, it's $23 so I am not expecting to use this as a machinists' reference; there is a very slight hollow on the 600 side of mine.) with the cutting material embedded directly in the surface of the steel. It is heavy. In my very brief testing, both sides cut plenty fast. A chisel sharpened up to 600 is honestly pretty sharp. Yes, it's fun and useful to make mirror finishes on cutters. You can make lovely shavings at 600. Are there better sharpening systems out there? Absolutely! But if you are reading the reviews on this, I bet that either you don't need a better quality sharpener right now, or that you have something better and are thinking of this as a "I don't want to risk getting something gross nasty on my good stones" option. It's good in either case. Will it last forever? I don't know. I don't care. It is $23. For reference, a similar setup from Eze-Lap would run about $185. This thing also came with little silicone rubber end caps that provide some grip if you don't want to mount it in a sharpening board. (Or if you're moving it, I suppose they'd protect it if you drop it.) Realistically, this is probably flatter and more durable than virtually anything you could get a hundred years ago, and craftspeople then made their tools wicked sharp and crafted awesome things with them. If you're on the fence, get this plate and practice sharpening. If you hate it, you spent $23.
T**D
Save money, save time learning GET THIS STONE
AN IDEAL BEGINNER'S STONE - Amazon carrys hundreds of brand-variants on the 35¢ double sided cheap silicate soaking stones. Some sellers charge $18 some $48. These are poor. Very hard to learn on. If you want to learn to sharpen knives, BUY A DOUBLE SIDED DIAMOND STONE like this instead. Sharpening on this stone (or the more expensive, but similar Sharpal that's well rated) is much easier when learning. This has the two indispensable grit ranges. If you can learn to 1.) hold your angle consistently. 2.) form a bevel (about the same) on both sides, and 3.) use your fingers to feel, follow the Burr you will be on your way! - Oh. Burr is important. Be sure to learn about burr. 400 grit shapes your angle & cuts the serrations all the way to the edge that successive grits refine, then hone. 1000 grit finishes. 1000 grit is the coursest fine stone or the finest coarse stone. Honing with a strop after 1000 grit sharpening is an acceptable substitute for laboring up through the grits. (I say this, but I often do sharpen on 2000 before honing) A whisper sharp & keen edge can be quickly made and maintained on any kitchen knife with this stone, and some stropping on leather. Finer grits bring some refinement at the expense of considerable work time. Grits above 3000 hone more than sharpening - reducing the coarseness of the corrugation - the 'Scratch Lines' cut by the low grit & middle grit passes. Above 5000 grit the stones become expensive because of complex traditional factors of Japanese blade culture. Essential for shaving with sharp straight razors. Not useful really for kitchen knives. Diamond compound (cheap or pricey) on a leather strop probably a quicker easier honing method. Save money. Enjoy this stone. Learn. Have sharp knives.
D**D
It's a very good stone and cuts really fast!
This diamond plate is great for what it is. It's strictly for profiling. Don't need to be anything special but it works great for profiling. I also bought the sharpal double sided plate. This works just as well as that one. I just use this one to preserve the more expensive one. I will be buying another one of these soon just to have for when this one wears out. They are cheap yet good. It is good and solid. Has a very nice weight to it. It doesn't fit in my current stone holder so I ordered a new one. I'm sure it'll work great. Most other cheap stones like this are paper thin and bend. This one is thick and flat. Just great overall. I'm not a fan of the pattern on the plate but it doesn't effect the way it works. Either way I will buy Another and I suggest you do to.
S**O
You get what you pay for.
None of these last forever. They cut aggressively at first, then at a lesser rate over time until you decide to replace them. I used to use Trend diamond plates until Trend transferred manufacture to China and changed the core material from machined steel to some synthetic. That’s when I tried this one because there was little to lose for $16.00 on sale. The plate is steel and super-flatness isn’t required for ordinary woodworking tool sharpening. I like my Sharpal plate better, but it costs four times as much, and given my attitude that these aren’t a lifetime investment, the price is right and they seem to work as well, so I have no complaints. When a $100 Trend plate wears out, that’s a bigger problem than when a $16-20 plate wears out. I didn’t detect grit contamination between the two sides. If this wears out more quickly than the expensive plates, I’ll just replace it with a fresh one and won’t cry much about it. It wouldn’t surprise me if these aren’t nearly as flat as more expensive plates. A machinist might notice a difference, but a woodworker or knife sharpener probably would not. Buy the ticket, take the ride. The plate comes with two rubber ends that keep it from moving around during use, and so it won’t scratch a counter or whatever surface it’s used on.
J**E
Good diamond sharpener
I bought these because of the large size, for dressing larger kitchen knives. I am able to get a better stroke on them. I like the grits for keeping a blade sharp, dull knives are more dangerous than sharp ones. I bought two with different grits. 150, 600 and the 400, 1000. This is a good selection for everything from rough dressing to fine honing The diamond plates seem to be durable and do not have to be flattened like other stones. With a S SATC holder they are easier to use. I think I made a good purchase at a reasonable price point. I can recommend these.