This set of post type earrings was manufactured for Avon to the best of my memory. The "C" shaped goldtone piece can be worn without the stone circles. There is definitely a left and right. These are nice for vacation becaue you have 3 sets of earrings that actually can piece together for travel without the thickness of an earlobe in them. The post goes through a tiny whole in the round disc and then has a butterfly type back. The photos make the blue stone look green but it is turquoise and the white has almost a mother of pearl look. These are in excellent condition. I had so many earrings they were not worn but a couple of times. The gold piece is 1 inch across while each disc is 3/4 inch. With the disc attached the earring is 1 1/4 long. We must collect 6% Pennsylvania Sales and Use Tax at checkout. Thanks for stopping by!