Mure-cho and Aji-cho are located at the base of Mt. Gokenzan. This is where aji-ishi stone is produced. Aji-ishi stone has a number of distinctive qualities, including its remarkable hardness. It is also said that even after two hundred years, words carved into an aji-ishi stone can still be read, and the stone does not lose its luster. The biggest feature of this stone, is how the more it is polished, the more it sparkles, and a unique black and white speckled pattern emerges. Of all the kinds of stone in the world, his pattern can only be seen in aji-ishi, and because of its rarity and special qualities, it is also known as diamond granite.