Gem stones used for the 7 chakra points include: root chakra = red jasper, sacral chakra = orange/peach aventurine, solar plexus chakra = yellow aventurine, heart chakra = green aventurine, throat chakra = lapis lazuli, third eye chakra = blue aventurine, crown chakra = amethyst. Individual chakra energy generators vary slightly due to the fact that natural and not man made crystals are used and the energy generators metalwork themselves are handmade. Average is 3.5" In width and .75" In height for overall entire generator dimensions. The 7 chakra energy generators have a 7 x 6 facet chakra point in each direction with a crystal quartz conical pyramid placed in the center. These are very powerful and beautiful items.