Next time I go down to my parents I will bring the pet rocks back and take some pics - there are some gorgeous ones amongst them. I am very attached to them mainly because they represent a lot of hours of hard "fossicking" - if I was buying I'd have a better collection.
One of my favourites are some pieces from a place called Hanover Cove. We climbed down a really steep cliff and knock hell out of some rocks at the bottom. One of them split open and the inside was covered in these bright fuschia pink crystals with a metallic shimmer - I forget what they were right now, but they were beautiful.
Will come back to this thread in a couple of weeks with photos...