Thanks Rich,
Dino bone fossils are often found in the Morrison formations geologically speaking if I remember my reading right. There are some great colors out there but finding rough on the ground can be tricky legally. (surface collecting is allowed.... I believe)
I heard of a private ranch that will let you dig for them near the state line in Utah. Many Dino bones and coprolites (dino crap) are found in the four corners areas of both states where the Morrison formation is outcropped often.
The pieces in this thread were all cut from a very old piece out of my grandfathers collection of lapidary rough. Like I said though, there are many many colors out there and some rock shops may have a hidden trove of them if you're in the right areas. I past up a really cool blue one a few years ago at a shop that I'm still kickin' myself in the butt for not gettin' today.
and it was only $20 bucks