Speaking of a symbol of Kagoshima prefecture is an active volcano named Mt.Sakurajima. She is too vigorous, and sometimes breaks window glass by her shock wave. Especially, a number of eruption increases and increases and breaks the record every year in these days. It is cut from tha lava produced by the great energy of ground. Its surface don't processed, and the rough face looks wounderful.
The main ingredient is silicon dioxide generally called quartz. It makes up anout 60%. And aluminum make up anout 20% under. Another impurities decide the color. Someone is black, another one is near white. The number og hole isn't same too. So someone is heavy, another one is light like a pumice stone. There are many pumice stone floating on the sea. People can find out the pumice stones along sea easily. The outskirts of Mt.Sakurajima specified the national park, so to get the lava is prohibited. By the way, our lava is bought from a company which is permitted to sell them officially. Don't worry.
It is a natural stone, so each stone has different color and size. The size is from the fist of woman to the fist of man. Please enjoy the difference too.
