Very good Suita for knives, sadly these are two cracks on the surface.
Brand: Tosho Knife Arts
Product Type: Natural Stone
Size: Koppa
Producing Area: Kyoto/ Japan
Mine: Ohira 大平
Layer: Suita 巣板
Recommended Usage: Kitchen Knife/ Polish
Wear Rate: ☆☆☆
Grain Scale: ☆☆☆
(*Maximum rate is 5 stars.)
Soaking Requirement: Not required