I got this as a gift from my fiancé. the necklace itself is absolutely beautiful. It is so shiny and smooth. the only problem is it seems to run small (in 31y/o female, 5'5", 140lbs. I have an average size neck. lol I'm not over weight or larger either) He got the 16" and it fits like a choker. According to 99% of size charts it should not be that tight. It wears like a 14" choker. so if your looking for something smaller but not a choker get a 18"Im the first pic. the second two are average length charts. So you see what I mean when I say it runs small.