The sales price of the product you have examined is determined by the seller. aquarium lava stone fracture natural lava fracture it is a 100% natural product. it is 20-25 mm in size. it does not release into water. it reduces the ph ratio of the water. please wash it 1-2 times before use. you can safely use it in your aquariums and decoratively. maximum 10 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 10 units. more than 100 stocks are available to be sold at the campaign price. a product can be sold by more than one seller. sellers of products offered for sale by more than one seller are listed according to the price they set for the product, seller ratings, delivery status, promotions on the products, whether the cargo is free or not, whether the products can be delivered with fast delivery, and the stock and categories of the products. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.