Yes bluestone, but not blue like wikianswers colour, more subtle tones than that (think glacier ice blue)
the bible says so
moraines
A circle is by definition 2-dimensional (flat). If you mean a circle that is wider in one direction than the other, than you are thinking of an ellipse.
If you have found a pill, do not eat it or offer it round, take it straight to a chemist's shop for safe disposal.