These earrings remind my husband of daVinci's Airscrew (1410) and some early helicopter designs. Ignore all that, these are just pretty earrings! The three propellers -- ahhh, plates -- can turn independently; they range from 1" to 5/8" in length separated by pewter beads.

These earrings hang down about 1-1/2 inches.  All my earrings have Sterling Silver ear wires.   Click on the photo to see the earrings super-sized...