“The generic term for stone compositions is ishigumi (石組; a.p. sekigumi “rock group”; iwagumi 岩組 “boulder group”), although it can imply the overall art of arranging and setting rocks in a skillful and thoughtful manner.”
source: http://www.japanesegardensonline.com/Site/Garden_rocks.html
I’ve always wondered, as have many others along the way, if there is a specific name under which to classify stone balance. Through all my research over the years, “Ishigumi” is the first word I’ve found which actually refers to arranging rocks in various ways…