Here are 2 sites with a fair amount of information about many different kinds of stones. I have directly linked to the page with amethyst though so if you want to look at other stones just browse the sites a bit.
http://www.majestic-quartz.com/~healing/infopics/a/amethyst.htm
http://spiritualplatform.org/sp/crystals/crystalsa.html
Respectfully,
Link's Shadow
just wondering what a pretty good chuck of amethyst could do. what powers it has, and yes ita raw amethyst. so post a reply if ya know
thankx,
T_Kman0610