Best Large Sharpening Stones of 2025

The DMT Diamond Dia-Sharp Whetsone Bench Stone is a versatile and durable sharpening tool that can quickly restore neglected edges with its coarse diamond plate. The sharpening surface accommodates a range of edges from large knives to small pointed tools. This 8-inch diamond stone sharpener is engineered to provide cutting-edge performance, ideal for repairing and honing knives and tools, flattening plane soles, irons, and chisel backs. It also sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface, and no messy oils are needed--sharpen dry or with water.

Keep your sharpening stones in top condition with the Sharp Pebble Stone. This double-sided flattening stone is made of high-quality silicon carbide, which allows it to cut quickly and wear slowly. Its unique diamond-shaped grid pattern is designed to efficiently remove waste material while flattening any type of sharpening stone, whetstone, oil stone, or ceramic stone. The extra-large size of the Sharp Pebble Stone makes it 3X times bigger than any other stone on the market, providing ample space to completely flatten any whetstone. Its dual grit design allows it to be used on coarse water stones as well as finer water stones with 1000 grit and higher. If you're looking for a premium quality flattening stone that produces excellent flat surfaces on sharpening stones, the Sharp Pebble Stone is the perfect choice.

The Norton Medium Grit Knife Sharpener Oil Stone is an efficient tool for sharpening dull blades, utility knives, and other sharp edges. Its Silicon Carbide Oil Stone is perfect for fast cutting and sharpening, making it great for repairing and maintaining the razor sharp edges of kitchen knives, hunting knives, and many more. Its durable design makes it perfect for use as a bench stone for tools, and it can be used with Norton Abrasives Sharpening Stone Oil for the most efficient sharpening system.

Upgrade your knives with the KEENBEST Actual Grit Premium Material Sharpening Stone Set. Made of superior silicon carbide, the 400 grit side repairs knives with big cutting edges while the 1000 grit makes knives smoother. The stone requires no oil, only water, and comes with a non-slip rubber base. It sharpens all kinds of knives and tools, including scissors and gardening tools. A quick user guide is included, making it a great household gift. The white corundum material is self-sharpening, improving work efficiency and reducing the need for frequent grinding wheel dressing.

The Sharp Pebble Knife Sharpening Stones Kit is a complete sharpening set that includes three extra large whetstones made of top-grade silicon carbide & corundum, a handmade non-slip bamboo base, and a whetstone flattener. The set comes with grit 400/1000/6000 stones that are easy to use and do not require expensive sharpening oils. With timely use of the flattening stone & leveling the grinding stone surfaces, these knife sharpening set should last a lifetime. The set allows precision knife sharpening without excessive resurfacing and can sharpen any blade, from kitchen knives to swords.

The Trend Sharpening Stone Kit provides an efficient way to keep your tools sharp. This double-sided bench stone features a coarse 300 grit side, perfect for quickly sharpening small or pointed tools without snagging. The extra fine 1000 grit side allows you to hone your tools to a professional edge in just seconds. With its large surface area and laser-engraved grit markings, identifying the right grit is quick and easy. Plus, the included non-slip mat, cleaning block, and storage pouch help maintain your stone, ensuring it stays in top condition for all your sharpening needs.

The Suwajume Knife Sharpener is a high-quality, 10000 grit natural stone designed for precision sharpening and polishing. Its generous size of 180 * 60 * 30mm allows you to comfortably work on various cutting tools. You’ll appreciate how this ultra-fine stone can create a mirror-like finish, making your knives sharp enough to easily cut paper or even shave hair. Its durable construction means less risk of damage during use, while the unique color variations add a touch of character when soaked in water or sharpening oil.