Ametrine forms when Amethyst and Citrine crystallize together. This physical combination has significance on the astral plane, as well: each crystal amplifies and augments the spiritual properties of the other.
They work together as a single whole that is truly greater than the sum of its parts. This is a wonderful stone to use when working towards any type of balance or harmony. Ametrine is also recommended for any type of transformative work, and for alchemical purposes.