I acquired this item, but I haven't used it and have kept it in storage. About Stone Flutes: 【The Oldest Flute in Japan】In ancient times... from the Jomon period or even earlier, stone flutes existed in Japan. They are not artificially made, but are entirely natural instruments created by the Niogai shell, a type of bivalve. They produce mysterious sounds with high frequencies. "Although they can be made artificially, the most pure ones are those created by nature. That's why they call upon the gods." (From Stone Flute Player: Mr. Yokozawa) This is a rare stone with a hole made by a shell for its dwelling. It is a naturally formed stone flute. Stones with beautiful shapes that are easy to play and produce beautiful tones are very valuable. I could only find a few after searching for several hours. When I was a beginner, I could produce a sound from the hole after about 30 minutes of practice. After practicing more, I was able to smoothly produce very beautiful, high-pitched sounds. I am listing stone flutes that produce good tones, but it may take a little practice to get the hang of it at first. That is also a fun process. The direction that produces a good sound is written on a peelable sticker. Please cover the opposite side of the through-hole with your finger. It seems that the sound becomes easier to produce when soaked in water. Also, there are tutorials on YouTube, so please refer to them. The length, width, and height are noted in the photos, so please take a look. I have also included information about the characteristics of the stone flute. After collecting it, I visited a shrine famous as a power spot with the stone flute to pray (as shown in the photos). I soaked it in fresh water for a week, washed each one carefully with a brush, and then soaked it in the shrine's spring water for a week and dried it in the sun. Please note that some may still have some debris or shells inside. After listing, I store them in a plastic bag in a dark place, but please wash them once before using them. Before packing, I will thoroughly disinfect them.