Opaque and green with red bits in. These are bits of jasper.
The bloodstone used to be called heliotrope (from helios - the sun). It was thought that if it was thrown into water, it would turn the rays of the sun red (it doesn't). It was also thought that it would make the person who wore it invisible (it doesn't do this either!)
Larger pictures of Bloodstone:
This specimen is polished (tumbled).
This specimen is natural. It doesn't have any visible red spots.