A form of divination where a stone is thrown into a basin of water.
The scryer will divinate by the sound the stone makes in the water and the images of the rippling water.
Sometimes oil is used instead of a rock.
In this case the scryer interpretes the shapes of the oil floating on the water.
Divination
Exploring Scrying: How to Divine the Future and Make the Most of It (Exploring Series)
Paralumun New Age Village