3.14159

"This key chain is handmade using an art print set in a 1 inch (25 mm) silver plated bezel. The artwork is sealed under glass to protect and enhance the image.

Looking for another design? Any artwork from my glass dome pendant section can be used to make a key chain. Just leave me a note at checkout. That section can be viewed here:
www.etsy.com/shop/MissingPiecesStudio?section_id=7413799"

Found at MissingPiecesStudio's Etsy shop.