The smell of burning incense, the sound of distant chanting and the soft glow of the warm lights activate your senses as you step onto the rock-covered ground of a shop that is nearly nothing but rocks, gems and minerals. But it is not the visage of an eerie shopkeeper — like something out of an ’80s horror movie — that greets you when you enter the Crystal Rainbow Rock Shop. Rather, owner Mimi Musgrave is a smiling face and a warm, friendly presence. And she loves all things rocks. “As a little girl I could not stop picking up …