The key to working with rainbow fluorite—or any crystal, for that matter—is to program it with an intention. That way, you'll be reminded of your goal every time you look at the stone and can then take action to bring it to life. Fluorite is thought to be a particularly good crystal for assisting with focus, clear thinking, and creative inspiration. "Its swirling bands of greens, purples, and blues have a calming effect on both mind and body.