For these earrings, the center pieces are these awesome 12.5x29mm axe cut aquamarine. I paired them with a smoky 11mm gray moonstone briolette. For a little bit of brightness, I added 8mm faceted clear czech glass rounds. These earrings are sterling silver with 20 gauge earwires. Each earring is 2 ½” long and weighs 3.52 grams.