--- product_id: 30802592 title: "8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits" brand: "ultrasharp" price: "¥24387" currency: JPY in_stock: true category: "Ultrasharp" url: https://www.desertcart.jp/products/30802592-8-x-3-diamond-sharpening-stone-dual-sided-knife-sharpener store_origin: JP region: Japan --- # Monocrystalline diamonds for ultra-fast sharpening Dual grit 300 & 1200 for full edge care Durable, stay-flat steel base for lifetime precision 8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits **Brand:** ultrasharp **Price:** ¥24387 **Availability:** ✅ In Stock ## Summary > 💎 Sharpen smarter, not harder—edge perfection in every stroke! ## Quick Answers - **What is this?** 8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits by ultrasharp - **How much does it cost?** ¥24387 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/30802592-8-x-3-diamond-sharpening-stone-dual-sided-knife-sharpener) ## Best For - ultrasharp enthusiasts ## Why This Product - Trusted ultrasharp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Stay-flat steel core resists wear and dishing, delivering consistent, professional results every time. - • **Dual-Sided Precision:** Two grits in one stone—aggressive 300 grit for chip repair, ultra-fine 1200 grit for mirror polish. - • **Confidence Guaranteed:** Risk-free purchase with 100% satisfaction promise—replace or refund if it doesn’t perform. - • **Speed Meets Efficiency:** Diamond-coated surface sharpens knives faster than traditional stones—no soaking or oils needed. - • **Generous Sharpening Surface:** 8" x 3" size fits large kitchen knives, woodworking chisels, and plane blades with ease. ## Overview The UltraSharp 8 x 3 Diamond Sharpening Stone is a dual-sided, professional-grade sharpener featuring 300 and 1200 grit diamond surfaces. Engineered with monocrystalline diamonds on a durable steel base, it delivers fast, precise sharpening without the need for oils or soaking. Its stay-flat design ensures consistent performance over time, making it ideal for kitchen knives, woodworking tools, and more. Backed by a 100% satisfaction guarantee, this stone is a must-have for anyone serious about maintaining razor-sharp edges. ## Description desertcart.com: UltraSharp 8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits : Tools & Home Improvement ## Features - DUAL GRIT FOR COMPLETE SHARPENING: Whether you need to repair a chipped edge or achieve a razor-sharp finish, this two-sided stone has you covered. Use the 300-grit side for aggressive metal removal and the 1200-grit extra-fine side for honing and polishing - FAST & EFFICIENT RESULTS: Engineered with monocrystalline diamonds, these plates sharpen significantly faster than traditional whetstones saving you time. No messy oils or soaking required ; Instruction Included - ULTRA-FINE PRECISION SHARPENING: Achieve a mirror-like polish and a razor-sharp edge on your knives and tools. The 8" x 3" surface provides ample space for large kitchen knives, woodworking chisels, and plane blades. Stone Holder included - DURABLE & STAY-FLAT DESIGN: Unlike waterstones that dish out and require flattening, these diamond plates remain flat over time, providing a lifetime of precision sharpening; Durable design sharpens even the hardest steels with ease - RISK-FREE 100% GUARANTEE: We stand by our sharpeners. If this diamond sharpening stone ever fails to perform, we will replace it or refund you—no questions asked. Purchase with total confidence ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01FPI7J6O | | Best Sellers Rank | #586,761 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,139 in Sharpening Stones | | Brand Name | Ultrasharp | | Color | Silver | | Customer Reviews | 4.5 4.5 out of 5 stars (196) | | Grit Type | Extra Fine,Coarse | | Item Dimensions L x W x H | 8"L x 3"W x 0.25"H | | Item Weight | 3.4 pounds | | Manufacturer | Ultra Sharp | | Manufacturer Part Number | DC38 | | Material Type | Diamond, Steel | | Model Number | DC38 | | Number of Items | 1 | | UPC | 617401201792 | ## Product Details - **Brand:** Ultrasharp - **Color:** Silver - **Grit Type:** Extra Fine,Coarse - **Item Weight:** 3.4 pounds - **Manufacturer:** Ultra Sharp - **Material:** Diamond, Steel - **Number of Items:** 1 - **Product Dimensions:** 8"L x 3"W x 0.25"H - **UPC:** 617401201792 ## Images ![8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits - Image 1](https://m.media-amazon.com/images/I/61Lu4AC0PcS.jpg) ![8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits - Image 2](https://m.media-amazon.com/images/I/31778P2VJaS.jpg) ![8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits - Image 3](https://m.media-amazon.com/images/I/51CCFmQNiwL.jpg) ![8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits - Image 4](https://m.media-amazon.com/images/I/51etepgcI-L.jpg) ![8 x 3 Diamond Sharpening Stone – Dual-Sided Knife Sharpener – 300 & 1200 Grits - Image 5](https://m.media-amazon.com/images/I/51duW1HxhdL.jpg) ## Questions & Answers **Q: Are the diamonds embedded by electro plating or adhiesive ?** A: The diamonds are electroplated onto the metal plates. **Q: Does the stone holder in the picture come with the stone. If so can it be used with other ultra sharp diamond shaped stones** A: Yes, the stone holder in the picture does come with the stone and yes it can be used with all other Ultra Sharp Diamond stones. In fact, the stone holder is adjustable and can be used with any stone that is between 6" and 9" long. **Q: What is the flatness tolerance of these stones?** A: +/- .001 (1/1000th) over the entire length/width of the stone. **Q: What is the diamonds per square inch?** A: The number of particles per square inch depends on the grit of the stone. In practical terms, grit is the number of abrasive particles that can pass through a screen with specific sized openings. A 100 grit abrasive particle will pass through a mesh screen that has 100 openings per inch. (This definition is generally accepted but the values are approximate. The thickness of the wire used to make a specific screen will vary the number of openings per square inch of that specific screen.)In general, a higher grit number represents a smaller particle size that will produce a finer edge. A lower grit number indicates a larger coarser particle size that will remove material much faster. ## Frequently Bought Together - Ultra Sharp Diamond Sharpening Stone (2-sided) 8 x 3 - Coarse and Extra Fine Grits - Trend Diamond Abrasive Lapping Fluid, 3.4 fl oz, Blue, Professional Grade Sharpening Fluid for Optimum Performance, DWS/LF/100 - Ultra Sharp Diamond Sharpening Stone - 3000 Grit - 8 x 3 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/30802592-8-x-3-diamond-sharpening-stone-dual-sided-knife-sharpener](https://www.desertcart.jp/products/30802592-8-x-3-diamond-sharpening-stone-dual-sided-knife-sharpener) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-09*