SPECIMEN GEMSTONE BUTTERSTONE CUBE Online Sale

Butterstone is from the Greenstone Belt of Southern Africa and is said to have formed in the Archaen period of history.  It is a sedimentary rock that at some time received serpentinization from heat which gave it a green tint.  Micro fossils in the form of stromatolites of blue green algae have been found in the fine laminations in this material.  These specimens have been cut in semi-block type shapes and have a polished side.  The average size is approximately 1” to 1 1 2” cube size.  Each one comes complete in an attractive display box and a package insert with historical background details.  This is a super buy!