Window Quartz formation is a configuration with excellent metaphysical attributes, and relate to where a diamond shape occurs in the crystal, sometimes like an extra or seventh face.
The shape of this window will be a perfect diamond, positioned in such a way that the top point of the diamond connects with a line leading directly up to the termination or apex of the crystal.
These quartz configurations are known to be one of the master or teacher crystals, and they can be a powerful asset to aid spiritual growth. These crystals are powerful quartz formations to assist you to honestly see your life, and can be very useful when you wish to make changes, but are not sure how to go about it and what direction you need to go in.
The window in the crystal can be utilized for you to look deeper into yourself, and see the real essence of who you are. Rather than a crystal to use on others, I feel that they are personal healing crystals, that can be used to help you to gain insight into deep spiritual matters that relate to parts of yourself you have been avoiding looking at.