Them most beautiful gems of the valley are in the caves that a hidden under the Mountains of the magnetites. Yet no one can enter these caves since they are on the Diamond ponies' territory.
The stones that lay in these tunnels radiate a particular energy that crystallizes everything that is around them, including the ponies who have been turned into Diamond ponies at the same time as their emotions disappeared.
Will you manage to enter the heart of the ponies made of stone?
The Diamond set is one of BamboO's creations.