One of several types of physical material which have powers beyond the physical world.

Naturally occurring only on the planet HomeWorld .

Makes shapeshifting possible for the Unchosen's bodies and shape shifting and control of Living Stone technologies by the Chosen Ones, such as HomeWorld aircars . Gives the Chosen Ones the power to command Gaia/Leviathan

The others are:

Dream Stone --connects or blocks the physical world to the dream world

Blue Stone --connects to the brain of one who wears it and can be programed by the one who creates it to control the ind of the one who wears it.