The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes spelled out as "pi"
Made of sterling (925) silver. The dimensions of the pendant are: 2.1cm (0.82 inch) by 2.9cm (1.14 inch). The pendant's loop is 4mm (0,15 inch) wide.
A leather cord is included with the pendant.