Natural Whetstone, Masamotozan Aogoto, 777g, Blue Nest Slate, Karasu, Kyoto, Raw Stone, Knife, Finishing Whetstone, Chisel

Thank you for looking. This is a raw natural whetstone from Kyoto Prefecture.
The maximum dimensions are 11cm wide, 14cm long, and 3.5cm thick.
The weight is approximately 777g.
The surface has been flattened, but there may be some indentations. The bottom may also be uneven.
As this is a raw stone, please understand this before purchasing.
Please judge the details from the photos.

Natural Whetstone
Tanba
Ouchi
Kozaki
Maruo Yama
Kyoto
Finishing Stone
Shohonzan
High-grade Whetstone
Tenka
Karasu
Namazu
Renge
Suita
Uchigumori