Throughout the history of mathematics, one of the most enduring challenges has been the calculation of the ratio between a circle’s circumference and diameter, which has come to be known by the Greek letter pi. From ancient Babylonia to the Middle Ages in Europe to the present day of supercomputers, mathematicians have been striving to calculate this mysterious number.

• Perfect for the math enthusiast, these Pi symbol earrings are silver-plated.
• Earring Length: ~1.25″
• We treat all of our charms with a protective coating to help prolong their shiny finish.
• The stainless steel earwires are nickel-free and lead-free.