I am a fan of stones with inclusions and this Prehnite cabochon is a belter! 

I’ve written about prehnite before - it’s a translucent green gemstone which often has mineral inclusions like these epidote inclusions seen in this stone.

It is the first mineral to be named and described as coming from South Africa and the first to be named after its discoverer, Colonel Hendrik van Prehn, a Dutch commander of the military forces of South Africa.