Price is not negotiable. The photos show the front and back. The front shows larger stones, while the back inevitably has smaller ones at the bottom. They range from 1mm to 5mm. This is a product of Somachi Corporation. Suna Somachi has the most easily released somatids due to the fine stone particles. Adding 1-2 drops of Somachi Plus will greatly activate the somatids. It's a bit of a luxurious way to use it, but many people suffer from hay fever in the coming season. It's said to be very good for hay fever to drink Somachi water or put Somachi stones in a net and take a Somachi bath♪ Replace the Somachi stones when they are used up. I put about 3 kilograms of Somachi stones in my bath. I will inform members and provide personal usage methods after purchase. I want you to understand and use it well, so I spent about an hour just writing the text, which is about 3,000-4,000 characters. Everyone is very happy with it. I've compiled it in an easy-to-understand way for beginners, so please feel free to purchase it♪ I also have 200g and 500g sizes listed, so please check them out from the list of items for sale. Including myself, many people drink it as Somachi water. Instant purchase OK. Will end when stock runs out.