Brass Pyramid for Home For Positive Vaastu Energy Vibrations at Kitchen, Main Door, Entrance, Toilet. Vastu Brass Pyramid Size 2.5 Inch. Brass Vastu Pyramid are extremely powerful and should be used with respect. One of its main function is to remove or recycle stagnated and negative energy and focus harmonizing energies. Its structure with four sloping sides emits positive energy that neutralizes negative energy. One of its main function is to remove or recycle stagnated and negative energy and focus harmonizing energies. The use of a Brass pyramid is a practical art to harmonize mind, body, and spirit with the environment. By just placing a pyramid at appropriate locations, you can achieve health, happiness, and prosperity.