A recordkeeper crystal is one that has been programmed energetically with divine knowledge from the past. Each has a sacred symbol, most often a triangle (pictured) on the face of the crystal. These can be difficult to see and can appear and disappear. The wisdom comes through differently according to the type of formation.
The triangle represents the holy trinity and the perfect balance between mental, physical and emotional aspects of our being, aligned with a point of spiritual light at the top.