The Antahkarana Cosmic Cross
The Antahkarana Cosmic Cross is made of seven Antahkarana symbols crossing each other. This represents the seven major chakras. This symbol will purify your energy and can be used to open the heart. It maintains sacred space, and helps your higher guides to work more effectively.
This three dimensional symbol is used in Reiki. It has its own consciousness and works directly with your aura and chakras causing deep healing.
More about this ancient symbol, along with suggestions on how to use it, can be found in this post: The Antahkarana. Here’s a black and white image to download and experiment with: