They have markings from manufacturer, to be honest I have no idea if they're plated or filled, I've had them for quite some time. Again, I got them from Avon, so more than most likely they ate not real.
hope this helps all way to find out a ring size you have 2 options print out a paper that has ring sizes on it place the ring over the different sizes and get the instant size and it lets you get a set of free plastic ring sizes that take a week to come in the mail but please if ya'll use this please don't get them and sell them here that's not why I am posting it I'm posting it to help everyone just respect them best of luck to all the site is http://www.bluenile.com/find-ring-size?track=NavEduRingSize