I just received these and am very pleased! They are the perfect size for my ears and simple enough for every day, but pretty enough for dressier occasions. They're heavier than I expected - they feel substantial, not flimsy/cheap. The CZs aren't brilliant but are sparkly enough, and the scrollwork on the back is beautiful - they can actually be worn the other way around as well, which is a nice surprise! The clasps are both strong and they don't feel like they would come loose accidentally at all. I don't think the product description gives exact measurements so here they are: 4mm wide, 15mm outside diameter, 10mm inside diameter (from post to inside bottom edge of hoop - the space in which your earlobe needs to fit). I can't speak to durability since I only just got them, but my first impression is very favorable, definitely worth the seventeen-dollar price, and look like they are worth more than that.