A Left Activation Window / Time Link to the Past is a crystal with an extra facet that leans to the left. It looks like a parallelogram leaning left. They may be sliver-thin or thick. It may remind you of a back slash on a computer keyboard.

Left Activation Window / Time Link to the Past activate left-brain functions (such as logical thinking and analysis). If you are inclined to be more in one ‘brain’ or the other, it is good to use the crystal of the hemisphere you tend not to use as much. Once you have reached a balance, you should use a Left and a Right Activation crystal together to maintain that balance.