Vogel Crystals are quartz crystals that are carefully cut in conformance to the findings and teachings of Marcel Vogel (1917-1991). They are healing crystals and meditation crystals that are cut to maximize the collection, amplification, and transmission of the Universal Life Force.
Basically a Vogel crystal is cut to amplify, coalesce, and focus thoughts and energy that you wish to direct into your body/mind or that of another person. The design of the crystal allows for your thoughts and energy (and the pervasive Universal Life Force), to enter the crystal at the receptive end, be amplified and focused as it travels in a circular pattern through the crystal, and be transmitted like a laser beam from the focal end.
In this way they are used primarily for healing efforts, both for sending healing energy to the body and the spirit; meditation to focus the connections with spirit world beings; and in efforts to focus our Life Forces on accomplishing our goals and dreams with laser like focus.