Okay now this is not for my OCD family because these are agate stones so what does that mean? That just like pearls they do not have symmetry. Once upon a time that would have bothered me but today I love it. Unique no two alike. They are the same size and shape but the lacing on them is different based on the way the stone was naturally created. Each pair of earrings have sterling silver wires. They are the perfect color blue. St. Benedict medal is at the top and is also sterling silver.