Clive, the hand and brush are a nice effect.

 

This rock with the reddish color spots is one of the various rocks lining our small driveway.  From best I have been told, the red is realgar and I believe the yellowish stuff is orpiment.  These minerals are like good friends and found together.  Don't eat this rock!  The stuff is a source of arsenic.    Ancient folks used it for pigment, medicine, etc.   This one was about 4 times longer but  I accidentally drive over the edge and  broke it.