Exploratorium Pi Keyring

Exploratorium Verified independent store

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Pi day isn't just a day - it's a way of life, a celebration of a never-ending number, and Albert Einstein's birthday! Created and celebrated at the Exploratorium every March 14th s ince 1987. Commemorate this infinite number with an Exploratorium exclusive Pi Keyring. Metal keyring features a pi symbol charm and a circle pendant with digits of pi on the front and the Exploratorium logo on the back. Pendant measures 1.5" in diameter, 2.75" in total length. Show more