I own a pair of Boston's Erwin Pearl synthetic diamond(CZ) earrings that look identical to the real thing. That said, these don't. They look good on and the size is right to be believable but the glimmer is off. They are totally worth the price of a penny. It's nice to have sterling silver posts instead of some irritating, discoloring nickel. If I need another pair I'm going to try the pink CZ to spice things up. If you plan on gifting these buy another box and take them off the small, cheap card they come mounted on!