Well they make weapons and armor out of glass which quite frankly shatters easily.
Besides ancient nords were master craftsmen and women, so why couldn't they make very pretty weaponry? You can still fight with pretty weapons so long as they are sharp and ahv ea good weight to them. Gold is soft though, yet could be decoratively worn by a Jarl and such.
Silver is used for weapons, I do not understand why they don't appear prettier especially around the hilt, kind of something that looks like a fancy piece of Jelwry but can very well kill you.
Glass weapons and armor are not made from glass, they just look like glass so they are called glass... Regardless they don't share the same weaknesses.
Most of the weapons you find in game are also fighting weapons. They are created for legions or at least large groups of people or for ordinary people that want to protect themselves against wolves. You aren't going to make those weapons fancy. You are going to make them useful and as strong as possible for a relatively low price. Sure it would make sense for some random people to get more expensive weapons (Jarls) but that's about it. And to counter that they have build unique Daedric weapons...
So it's lacking yes, but only like 9 or 10 weapons anyway.
Also to be quite fair, I'm pretty sure that if given the chance every Jarl would prefer an Ebony or even Daedric sword to a fancy steel sword...