Rutilated Quartz

Does anyone have any in-depth info on the above? I have searched some sites and found some info... but not enough to satisfy my curiousity. I found a fabulous crystal with turquois and some other stone, that has a "poison" chamber above... very cool.I am extrememly drawn to it. Although it is very heavy and does sit right at my heart chakra, I love it. If I can find my camera (LOL, 2 girls in the house) I will add a shot of it... Love and Light, Karen