Chakra: Crown The structure of Optical Calcite creates a unique double refraction - meaning light enters from one point and creates two rays of light on the opposite end. This makes it ideal for use in manifesting or in crystal grids as it doubles intent and energies. If you are searching for clarity or insight, Optical Calcite assists in helping to clear away the mental clutter so one is always able to find the light. The cube is a three-dimensional square; it is a symbol of stability and permanence, of geometric perfection. It represents the final stage of a cycle of immobility, it can be seen as the truth, because it looks the same from any perspective, it is commonly thought of as the counterpart of the sphere. The cube is, in essence, the squaring of a circle. Scientifically, the cube usually represents salt. It is the earth: a square plus the four elements plus three dimensions.
