{"product_id":"kato-mine-nakayama-natural-whetstone-experience-size-2-a-j","title":"Kato Mine Nakayama Koppa Natural Stone, Small Size Group 2 (A-J）","description":"\u003cdiv style=\"font-family: Arial, Helvetica, sans-serif; color: #333333; font-size: 13px; line-height: 1.65; max-width: 820px;\"\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 22px 0 8px;\"\u003eOne of Japan's Most Celebrated Natural Finishing Stones\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eNakayama is widely regarded as one of the finest sources of Japanese natural whetstones. Located in the Umegahata region of Kyoto, the mountain produced exceptional finishing stones prized by generations of sword polishers, woodworkers, razor users, and knife enthusiasts.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eKnown for their smooth sharpening feel, refined abrasive particles, and beautiful edge finish, Nakayama stones have become some of the most sought-after Japanese natural whetstones.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"border-top: 1px solid #dddddd; margin: 22px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 0 0 8px;\"\u003eThe Legacy of Kato Mine\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eAmong the names closely associated with Nakayama, \u003cstrong\u003eKato Mine (Kato Kozan)\u003c\/strong\u003e is one of the most recognised.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eThe Kato family historically operated sections of the Nakayama quarry and supplied natural finishing stones to craftsmen and specialist stone dealers. Today, the Kato name remains strongly associated with historic Nakayama whetstones and Kyoto's natural sharpening stone tradition.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 1px solid #dddddd; margin: 22px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 0 0 8px;\"\u003eEvery Natural Stone Is Unique\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eUnlike synthetic sharpening stones, no two natural whetstones are exactly alike. Even stones originating from the same quarry or geological layer can vary noticeably in use.\u003c\/p\u003e\n\u003cul style=\"margin: 8px 0 10px 18px; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eSharpening speed\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eAbrasive feel and feedback\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eMud generation\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eScratch pattern\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003ePolishing characteristics\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eHardness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eThese variations are an important part of the appeal of Japanese natural whetstones, with each stone offering its own individual sharpening characteristics.\u003c\/p\u003e\n\u003cdiv style=\"border-top: 1px solid #dddddd; margin: 22px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 0 0 8px;\"\u003eKoppa Size – A More Accessible Nakayama\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eThis listing is for a \u003cstrong\u003eKoppa-size Nakayama natural finishing stone\u003c\/strong\u003e. Koppa are smaller or irregularly shaped stones cut from usable sections of natural whetstone material.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eTheir compact size offers an accessible way to experience genuine Nakayama stone without the significantly higher cost of a full-sized bench stone.\u003c\/p\u003e\n\u003cp style=\"font-weight: 600; margin: 14px 0 5px;\"\u003eSuitable for:\u003c\/p\u003e\n\u003cul style=\"margin: 5px 0 10px 18px; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eKitchen knives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003ePocket knives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eWoodworking tools\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eStraight razors\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eDetail sharpening and polishing\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eExploring different natural stone characteristics\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 3px;\"\u003eCollectors of Japanese natural whetstones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"border-top: 1px solid #dddddd; margin: 22px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 0 0 10px;\"\u003eProduct Information\u003c\/h4\u003e\n\u003cdiv style=\"background: #f7f7f5; border-left: 3px solid #e0b700; padding: 12px 15px; margin-bottom: 16px;\"\u003e\n\u003cdiv style=\"margin-bottom: 4px;\"\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Nakayama, Umegahata, Kyoto, Japan\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 4px;\"\u003e\n\u003cstrong\u003eMine:\u003c\/strong\u003e Kato Mine (Kato Kozan)\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 4px;\"\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Natural Finishing Whetstone (Awasedo)\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 4px;\"\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Koppa \/ Small Natural Stone\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 4px;\"\u003e\n\u003cstrong\u003eApprox. Fineness:\u003c\/strong\u003e Comparable to 6,000–8,000 grit synthetic stones\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Dimensions vary by individual stone\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003eEach stone is unique. Colour, pattern, hardness, inclusions, shape, and dimensions naturally vary according to the individual piece.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px;\"\u003e\u003cstrong\u003eThe photographs shown are of the actual stone you will receive.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"border-top: 1px solid #dddddd; margin: 22px 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4 style=\"font-size: 15px; font-weight: 600; color: #e0b700; margin: 0 0 8px;\"\u003eA Piece of Kyoto Sharpening History\u003c\/h4\u003e\n\u003cp style=\"margin: 0;\"\u003eA Nakayama whetstone represents more than sharpening performance. It is a piece of Kyoto's long-established natural stone tradition and a material that cannot be reproduced by modern manufacturing. For collectors, sharpeners, and enthusiasts alike, these Kato Mine Nakayama koppas offer an opportunity to experience one of Japan's most respected natural whetstone sources in a compact and accessible format.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Knives and Stones","offers":[{"title":"2A","offer_id":48285213294813,"sku":"JNAT-KT-NKYM-KP-2A","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"2B","offer_id":48285213327581,"sku":"JNAT-KT-NKYM-KP-2B","price":59.95,"currency_code":"AUD","in_stock":false},{"title":"2C","offer_id":48285213360349,"sku":"JNAT-KT-NKYM-KP-2C","price":59.95,"currency_code":"AUD","in_stock":false},{"title":"2D","offer_id":48285213393117,"sku":"JNAT-KT-NKYM-KP-2D","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"2E","offer_id":48285213425885,"sku":"JNAT-KT-NKYM-KP-2E","price":59.95,"currency_code":"AUD","in_stock":false},{"title":"2F","offer_id":48285213458653,"sku":"JNAT-KT-NKYM-KP-2F","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"2G","offer_id":48285213491421,"sku":"JNAT-KT-NKYM-KP-2G","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"2H","offer_id":48285213524189,"sku":"JNAT-KT-NKYM-KP-2H","price":59.95,"currency_code":"AUD","in_stock":false},{"title":"2I","offer_id":48285213556957,"sku":"JNAT-KT-NKYM-KP-2I","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"2J","offer_id":48285213589725,"sku":"JNAT-KT-NKYM-KP-2J","price":59.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/7227\/0217\/files\/DSC_7779.jpg?v=1785120606","url":"https:\/\/www.knivesandstones.com.au\/products\/kato-mine-nakayama-natural-whetstone-experience-size-2-a-j","provider":"Knives and Stones","version":"1.0","type":"link"}