Remember the body is made of pure energy.  There are several crystal/stone choices to balance each chakra. You can visit a metaphysical store or order a book online to learn more about crystals.  Tomorrow I will share some basics on stone/crystal cleansing/recharging.  

My favorites are hematite and obsidian: these black stones protect the root chakra (safety & security). Another one of my favorites is amethyst which is used for the Crown chakra, connection to Spirit.  As you work on yourself, and choose to work with this modality, you realize that energy is ever changing.  So some days you need more attention on one energy center or chakra than another. I love amethyst since I live in the higher chakras most of the time.  But as you hold and feel the stones, you decide what works for you.