This flat freeform stones (about 3cm in diameter and about 1cm thick) are ideally used for body placements, chakra work etc. For extended treatments they can be fixed to the body with a Band-aid or can easily be carried along as a "pocket-stone".
Each stone preformed by hand then tumble-polished. Sold in units of 0,5kg (app. 15 to 30 stones / sales unit).