Blue Tiger Eye Towers  3.5" Tall and .75" wide. 4 sided and approximately weighs 12 grams.
 
This is a approximation and Pictures are for reference only. 
 
Blue Tiger Eye has been prized by several civilizations for many years and still is prized today. Also known as Hawks Eye. The Mohs is 7, color is blue and black found in Brazil, Namibia, and Canada.