Vintage Geometric Black and White Clip-On Earrings

The thing I love about clip-ons, especially ones like this, is knowing how no one else is going to be wearing the same ones when I wear them. They did not come from Walmart or Old Navy. They are stamped "Made in Italy" on the back. I have no idea how old they are but they definitely weren't made in a sweat shop in China. I wish they could tell me their story. I bet they have been to some good parties. I wore them dancing and they stayed in place all night. They are about 4cm across.