"This is your first lesson: you will hold the gems and fill them with your magic by focusing your will and emotion.  The sharper your focus or the stronger your feeling, the more of your magic you expose to the gem and the brighter it will glow.  I want you to try on your own first, and I will teach you techniques to help once you've made an attempt.  Once more, all you must do is focus your will or emotion upon the gem.  Begin."