Most people understand the function of our inspirational glass stones. It's not that they "do" anything, their purpose it to make people aware of their message. What you give your attention to is what you get. That's the Law of Attraction. When you hold a stone in your hand that says, "Peace" and concentrate on being peaceful, you are going to find greater tranquility.
There's science behind this. The reticular activation center of your brain causes your attention to focus on the issues at hand. If you keep Focus Stones around with the positive qualities you wish to incorporate into your life, and you meditate on that quality, you will achieve those qualities. Try it!