Pyramids both anchor and direct energies. They stabilise the energies of the earth while enhancing and projecting energies out the apex. Pyramids work well when placed around the home. Small ones can be placed on the chakras for chakra balancing. Pyramids make powerful central stones in crystal grids to amplify your intentions, raise the vibration or protect someone.
Cubes act much like a sphere. The energy is able to be disbursed evenly in all directions around the room in which they are placed.
View here the every changing and growing range of cubes and pyramids available through Crystal Inclusions.